To access a 4x4 you need a two foot plus , aproach path . As such, to access all four sides, you would need an 8 by 8 area . Now- in my mind you , are approaching the size of a small bedroom . That is why I didn't go with a tent .
If you have the real estate , tarp off your area and go to town.
On your first grow, you are going to want to get to know these things.
You will want to see them from all sides . You will want to move them around.
You may even end up taking one for a walk .
Who knows?
Clutter leads to accidents, disasters, and frustration .
If going diy, one door is hard enough to seal for light, nearly impossible to seal humidity ( on the cheap) . Four doors would be 4x more impossible.
It is a hard decision to make.
You have displayed the presence of mind to think ahead, and plan ; this alone tells me that you will be a successful grower. I am looking forward to the show .
Always work and think out loud, here on the Farm .
There are many experienced growers ,who have made all of those decisions, and all of these mistakes already.
I say go for it.