That is a tough and overlying question.
I, like you, focus on maximizing profit versus having the sexiest buds. I appreciate your equation above, but I think your challenge is more multi-dimensional than you think.
I have found the following to work:
- a strain that is easy to grow (more important than you think). This is important because your equation must include a *(chance of a disaster that wipes out a crop or multiple crops). A easy to grow strain is key because one wiped out crop per year is the same as adding 10-20% of length to existing cycles.
- a short flowering time like big bud or NL#5 or many indicas is key. Many serious strains will give you that.
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My recommendation, if you are patient enough (and reside in Canada), is to buy 4 strains you think will work. Do a run of 1/2-1lb of each while monitoring time, ease of growing, buds/plant, and any other variables worth considering including what your clients will give you from a price/feedback perspective. From there keep the best 2 strains. It is always smart to have 2 so your eggs are not in one basket.
Ask the client. If you are doing this as a business then your business decisions should be designed to please your clients.
I hope that perspective helps.
BM
PS - I really like green crack, purple kush, satorie and have had success with BC big bud. Try those if you like.