Setting up first grow: Room setup, Genetics, and Techniques

I've been lurking grow forums since the overgrow days but never pulled the trigger as my living situation was never steady enough. I even went as far as getting some equipment off of Craigslist 7 years ago! Anyway, the time has come and I am cramming before I finally get going. I'm in the middle of framing out the grow room in my basement.

The Grow space I have allotted to myself is 15'x4'x8'. Five feet of the fifteen feet are under the stairs so the ceiling is sloped at a 45 degree angle.

The equipment I already have is:
1 - 1000w HPS light (I need a hood, was thinking cool tube?)
1 - 400w MH light (I also have a hps conversion bulb for this) with a hydrofarm hood
1 - Soler & Palau TD-100X 135cfm inline fan
Advanced Nutrients - G,M,B
Net pots
Rockwool Cubes
Air pump/airstone

Most research I have done up to this point has been for a DWC setup so I planned on doing 5gal buckets. I would also like to make this a perpetual grow. I was thinking of dividing the 10' portion of the room that is not under the stairs into two 5x4 rooms so I can run the MH setup for vegging 4 buckets in one room which can be moved into the HPS room when I flower. As for the sloped room under the staircase I was considering getting some T5s perhaps to keep seedlings/clones/mother under the stairs before they go under the MH for proper veg. I believe I am going to need more fan power, right? There is a 4" duct which goes outside that I can tie my ventilation into RIGHT next to the room which is convenient. I bought flanges for the hydrofarm hood to connect the ducting for the MH and need some advice on venting the HPS since I still need to purchase the hood and I am currently leaning toward the Cooltube....

Beyond the room design my next hang up is seeds. I've been researching most feminized seeds and have been compiling a list along the way for the day that I finally write this thread. I'm indecisive as to whether I want to hst/lst/scrog and am open to any opinions. The main reason I am indecisive to cropping technique is I would like to decide on a strain first since Ive that certain strains react better to certain techniques. I guess with the height I have I could also SOG.... As for seed research, here is what I've been looking at so far. I am TOTALLY open to any other recommendations as well as different opinions. I have a feeling I am overthinking this:
Rare Dankness - Ghost Train Haze #1 or Moonshine’s Ghost Train
Serious Seeds - AK-47
Sweet Seeds - Big foot, Green Poison, or cream 47
Female Seeds - c99 or Grapefruit
I would really love to eventually get into some unique strains and landraces. I've been smoking for 15 years but never had access to anything crazy or unique and would like some variety in my life instead of this virtually uncured alleged 'Blue Dream' or "blah blah cookies" that's all over the streets now. I'm also a sucker for old school strains since I was smoking around the town brown 10+ years ago so I missed out on all of the classics. I have a feeling I shouldn't get too crazy since I am inexperienced and having a hard enough time selecting a strain. I guess my primary focus right now is the typical potency, yield, and resilience that a first timer would need. As a side note I live in the country now and would like to get a guerilla grow going eventually (more research to do after I iron this grow room situation out!) so if any of these genetics would also do well outdoors in the North East USA that would be great albeit not a high priority at this point.

Based on this thread what are some of your opinions and recommendations? I am also about to buy Marijuana Growers Handbook by Ed Rosenthal. Thanks for any help! I am very excited to get this project going after wanting to for over a decade....!

Start smaller and keep it simple. Do a grow in 1 room with 4 plants and learn. As for a strain get an easy to grow genetic.

+1 for starting small. Grow a couple plants through to harvest from good genetics under your 400 to get the hang of what you're doing.

For using what you have for a perpetual setup, using the 400 MH for veg room and 1k for a flowering room seems like the way to go.

Ok cool. I am indeed going to keep it small. I'm not looking to do anything commercial here this is just a hobby I've always wanted to do (I love gardening, farming, and weed!) and quite frankly drug dealers are typically shady and not knowledgeable about something that is a big part of my life not just a way to get fucked up. The seeds I listed above I chose because I read they are easy/resilient to beginners mistakes. What are your thoughts on which genetics are in fact easy to grow?

Ak 47 and Northern Lights i hear are easy to grow. Medi Bud was super easy for me to grow and they harvest was great, goid yield, flavor and effect. GDP has always been goid to me as well. I am groing it fro bag seeds now and even though i totally messed my nutes up they still are flowering well.

I did NL for my first. I'd recommend something very indica that will finish around 8 weeks. The longer they have to go, the more potential problems you'll have. Indicas tend to stay more compact too.

Ok cool so now I am eyeing up Nirvanas Northern Light feminized and I am going to check out the ventilation calculator thanks guys