Ahhh Genetics. I have allways said that dispensing clones is more profitable then grwoing herb, IF you have an outlet for clone stock.
The big problem with clones is timing. Once they are rooted, you are "on the clock" for getting rid of them.
As we all know, once rooted, they grow fast.
Does your Law allow multiple Mother plants of the same strain? Or are you only allowed 1 mother of each strain? That will be your limiting factor on how many clones you can supply.
If I were you, I would skip everything to do with seeds and "aquire" clones to start your process. That will save you quite a bit of time, and alot of headaches, and wasted space/time/nuits/soil.
As far as what strains man, alot of choices. I would stick with at least 2 true "OG kushes", perferably Skywalker for sure and maybe a SFV OG.
Granndaddy FOR SURE. Super popular and easy to grow.
Blue Dream...super easy to grow and high yeilding.
Girl Scout Cookies. The new (gotta have it) strain causing major hype.
Last but not least, something from the "Family", either Chem 91' Sour Diesel or the sort.
Hope it works out Bro! It's a GREAT Biz!