Best strain for my srog setup?

I'm finally starting to get ready to build my room i have been planning. I have a 600w hps/mh light and i plan on doing a scrog setup. I prefer to use old things around the house and i found an old dog gate we once used. It is roughly 50"(1.27m)long and 31"(0.7874m)wide with 1"x2" squares. I plan on using maybe 3 of those so i have a roughly 81"x61" area for 6 plants. I am curious if this would be enough area for the plants and if anyone would know which of these strains would be the best for this setup.

I just sent in my order for:

1x Royal Dutch Genetics Amnesia
1x G13 Labs Raw Diesel
1x Delicious Seeds Fruity Chronic Juice
1x G13 Labs Pineapple Express
1x World of Seeds Landraces Afghan Kush

Freebies
2x BlimBurn Seeds Orka

I have another 600w for mothers. These are all Fem seeds so i plan on growing 3 strains, and 2 plants of each strain. The 3 strains that would be best for scrog i will grow 3 mothers and cut 2 clones from each so they all start at the same time. Has anyone grown any of these strains and can offer any advice?

In your list I've only tried PE, scrogged and 600w hps. I don't belive that it is a very good strain for scrog as they don't stretch a lot(flipped at 50%, ended up with 80% or so filled) , perhaps the phenos I ran didn't stretch. Tending to form large colas in scrogs rather than many more smaller colas(not branchy). It has very good munchies effect for most people I know.

First of all the beauty of the scrog is that any area you decide on is the perfect area. You can grow 8 plants under a thousand watt or just one. You will train the plants to grow into whatever shape you want.
Second 6 by 8 is too big of footprint for a 600 watt. I don't think you need the 50 watts per foot that some people say but you would want more than the 12 watts per foot provided by a 600 in a 6 by 8.

I have been scrogging for about 3 years now and I have had good success scrogging most strains. The exception to this has been really stocky indicas. I haven't grown out any of the strains on that list but I would bet the raw diesel and amnesia would work great in a scrog. The landrace Afghan kush should be terrible for scrogging. The way I scrog I use 6 plants to fill out a 5 by 10 screen with 2 thousand watt lights so I need strains that can grow outwards. Super stocky indicas have very little interest in spreading out into the screen and can be scrogged for the same amount of time as hybrids and fill up less than half as much space.

Ok good i wanted to only use 50"x61" so 4x5 roughly for them. Ill run all 6 in that area to better fit my light setup. Prob not the best area for thrm all but ill flip them sooner so at best they wont get super crowded inside there. Im goin to add another 600w n the future for flowering and then ill adjust my area. Thank you two for your input. Hopefully someone has ran some of the other strains and can give me some info on them.