As listed I have:
a 10x12 room (12x12 with closet)
a 2x5 closet
a 5x8 bathroom
My plan:
10x12 room:
4x8 flower tent along 10ft wall, leaving 2 ft to get in closet. 2x HLG 550 R specs
5x5 veg tent across from 4x8, leaving 3 feet between them along 12 ft wall. 1x HLG 300 B spec
OPTIONAL: 4x4 flower tent next to veg tent. 1x HLG 550 R spec
The closet:
T5 shelves and domes for seedlings and clones
The bathroom:
Drying room
Process:
Pop 20 seeds, 2 weeks in closet then moved to 5x5 veg for 50-60 days.
Cut clones @ 30 days - root and move to 4x4 flower tent where they veg and flower under 550 R spec.
Cut clones @ 55-60 days.
Move plants in 5x5 to 4x8 flower. Move clones to 5x5 veg.
Flower 56-63 days. Veg 50-60 days.
Harvest original seeds, move 5x5 veg to 4x8 flower. Populate 5x5 again. 4x4 flower should be ready for switch around same time.
Then pretty much keep it going from here.
8-9 weeks later I harvest a 4x4 and 4x8, 8-9 weeks later harvest a 4x8, 8-9 weeks later harvest a 4x4 and 4x8 again.
4 harvests a year
2x 32 sqft. harvest (4x8 tent) 960W HLG LED = 1gram per watt = 4 unit low end
2x 48sq ft. harvest (4x4 + 4x8 tents) 1440W HLG LED = 1gram per watt = 6 unit low end
= 10 units a year worst case. I'd imagine I can push out more than 1g per watt but I like to imagine the worst case scenario so that anything extra is a bonus.
My questions:
1 - Will the 5x5 veg tent allow me to fit enough plants and/or produce plants big enough to utilize the 4x8 flower tent?
2 - Relates to question #1. Should I base my final pot size for the plants going to the 4x8 based on how many females/keepers I get to make sure I'm filling out the space or should I have a target # of plants ahead of time?
3 - Can I use this space more efficiently than what I've proposed?
4 - Should I grab all R spec HLGs and just run the the tents as full cycle tents?
I'm going to pop 20 seeds for the 4x8 tent, after sexing (let's say I get 10 females), I wanted to jump from a 1-2 gallon pot to a 5-7 or even 10 gallon pot, and let them grow into it before flowering is that reasonable? If I get more females then I'll run smaller pots but just want to make sure that's ok so that I know I'm utilizing the 4x8 fully.
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You asked a lot of good questions; I can tell you did a lot of research. Lots of information to break down here and probably won't be able to reply to all your questions accurately without gathering more information. Here's my opinion:
1. A 4x8 grow tent and 5x5 grow tent in a 10x12 room sounds like a tight fit. I run a 4x4 and 2x4 in about the same size room right now. I did a 4x8 and 3x3 in the room at one point and it was annoying to work in such little space. The space in the room not taking up the grow tents I use for a table to mix nutrients on. Also, I sometimes pull plants out of the tent since in some cases it's a bit easier for training/pruning. But do what you want of course
2. The HLG 300 B spec has a 4x4 Veg footprint so you wouldn't be covering the entire 5x5 grow tent.
Your questions: 1 - Will the 5x5 veg tent allow me to fit enough plants and/or produce plants big enough to utilize the 4x8 flower tent?
Yes, if you do it right. I personally like running 8-10 plants in a 4x8 - 5gal containers. If you use larger containers, make sure they will actually fit.
2 - Relates to question #1. Should I base my final pot size for the plants going to the 4x8 based on how many females/keepers I get to make sure I'm filling out the space or should I have a target # of plants ahead of time?
Basing on # of females is one way to go about it. That's a good way to go about it in your case imo. So if you get 12 females, going with 7gal containers probably doesn't make sense (or may not even fit).
3 - Can I use this space more efficiently than what I've proposed?
Like I mentioned earlier in this post, you're already pretty crammed for space.
4 - Should I grab all R spec HLGs and just run the the tents as full cycle tents?
So running all autos on 18/6? That would work. If photoperiods, plants don't grow at all the same rate so you could have some plants much larger than others and would need to flip all to flower at once if you do it that way. Nothing wrong with that method; I do that very often. Just may not cover your grow space entirely and/or the height difference in plants may force you to raise the grow light and having to boost the smaller plants up onto something to maintain an even canopy.