Your worry is legit and telling you that you are split between what you know you should do and what you want to do.
However, I prefer growing multiple strains at once for the variety. It is so nice being able to go to your cupboard to a score of jars of varying varieties. And, some strains i get used to pretty fast.
However, I grow soil, and the grow I am starting up is perpetual. This makes it easy to move things around, and im not using my grow room as the dry room.
Every post made here so far is 100% accurate in the concern expressed, and i experienced the "hot soil" for some of my strains.
Buuuuut, the variety is nice to have.
Your problem will be that you have to dry in the same space. A big problem it sounds like to me.
My problem back in 2011 was:
#1 - Uneven use of space by the different strains harmed the strains with less branching.
#2 - Height issue because I didn't know the strains
#3 - Soil ran hot for some of them, and nothing I could do but hope they didn't crispy critter, and they did not. Yields were very very satisfactory nevertheless.
#4 - Photo-period prevented efficient use of the space and timely start of the next grow, which actually would have resulted in my not having any plants up when i was busted if they had all been the same and finished at 64 days like the AK47.
The timing is important for you. Therefore it is probably best to use only 1 strain, or strains with the same finishing window.