Newbie advice needed

Hello everyone, I'd like some advice.

I'd like to do a seed run so I have a backup and for experimentation by selectively pollinating some lower flowers.

I have a variety of females and males and I'd like any suggestions on which ones to breed with which to ensure some interesting and potentially useful seeds.

These were all grown from seeds, some from PeakSeedsBC and some from PickNMix in the U.K.

The females: Northern Lights (Peak), Northern Skunk (Peak), Skunk (Peak), SkunkBerry (Peak), Big Bang (PicNMix), The Flav (PicNMix)

The males: Northern Lights (Peak), Northern Skunk (Peak), Skunk (Peak), SkunkBerry (Peak), The Flav (PicNMix), Pandora's Box (PickNMix)

So this doesn't get too complicated and for the best possible diversity I'm thinking of picking one of the PickNMix males and breeding it to one of the Peak females or vice versa.

Any and all advice appreciated.

I won't get technical by any stretch of the imagination and try to explain as plainly as possible. First you need to do some reading, I will include a couple of links for you. This all comes down now as to what you want to accomplish, you say best possible diversity, take the plants that look the least alike and presto you have lots and lots of different phenos possible but not the best possible plants more than likely. If you want the best possible plants just from what you have growing and not considering long term breeding and such it becomes much more simple process.
I would first consider which of my plants looks most like my idea of a perfect plant. How are they branched? How is the foliage? Does this plant have better leaves than this plant? Does this plant have better roots than the other plant? This one flowers for 8 weeks and that one flowers for 6 weeks, which do I prefer or does it matter? There are many other things to consider if you want a good plant that you breed for between plants. Ok, to make a long story short and just good seeds. Take the plants the most alike and pollinate those together. The more differences in the plants will give you the greatest combinations of possibilities whether they be good or bad traits.
Without getting too indepth when you do this you certainly want to keep a record of what you have done. This way when you grow them you know more or less what to expect. Doing this will help you to keep track of your seeds so that if you grow or want to grow and do the same next time you can decide ahead of time what your goal is in crossing again.
I am going to put in a link for breeding and a link where you can look up the lineage of your plants in a big data base, this might help you decide who to pollinate with whom.
http://www.mellowgold.com/grow/mjbotany-removed/marijuanabotany3.html

http://en.seedfinder.eu/search.html

I hope this helps and excuse the long winded lecture, just been enjoying the fruits of my labors.
Happy Growing

Thank you, I appreciate the "long winded lecture", I really do. You've given me much food for thought and some good links.
Cheers!

Wow Canefan, just read through that first link and what an amazing read. It's jam packed with information and a lot of stuff I've yet to see anywhere else. Thanks for the link.

My pleasure I am always happy to help any way possible. I hope that this venture works well for you, I have been making seeds for many years and really enjoy it. Happy Growing

also you may want to look up the work of gregor mendel, his experiments with the selective breeding of pea plants changed the way we looked at genetics and selective breeding.