Need newbie help,first grow,gurus help,im lost.

Ok,so maybe someone saw,maybe not I made thread before with my room scheme,now im lost at other stuff,im trying to avoid all noob 3000 same questions asked before and act little more mature,since I am,but all I can say is after sitting for 3 hours and looking at other people answer it dont feel like anything applies to me.
So heres my game plan :
I have room :
11.5 feet x 6 feet wide
8.5 feet tall.
I already have 600W HPS connected and all working,90k lumens,I will buy someday 400w lighter for which I will get 400 MH and 400W Hps,will use 400w MH for veg,and then switch to HPS to get total of 1000w HPS light,thought maybe 600 hps + mh,but fook it will not try to invent new bike,I need maximum quanity.Have seeds Big Bud.So questions..
1.How many plants??? I read 30 diferent threads and people are saying from 1 to 20.( I think about 5 buds and one obsession 6total plants)
2.Is 400w MH enough for veg 6 plants?
3.Mylar and faylon I cant get,im in russia,its harder,my room walls are very not straight,or however you get it,anyway,its not really good idea to paint white,which would be my best bet? foil?

It's not the number of plants. It's about maximizing your available "light space". If that makes sense. Like, for your 600w lamp, you'd get the best results from a 4x4 area. 5x5 is pushing it, but it's still possible. 400w can veg a 4x4 area....In flower - 4 plants max in 5 gallon pots.

No mylar? Scoop up some flat white paint at the hardware store. Almost just as good. No foil. Foil is only good for smoking heroin. You have a huge space. That's rad, own that shit. Feel free to PM me if you're looking for specifics....

Какая область России вы занимаетесь? Ищу другом из России, я скучаю по дому так много? или вы другой западной сокрытии правды

https://gibridov.net/forum/index.php

Study the book

Marijuana: Jorge's RX
http://books.google.com/books?id=WRNNS2TUB3YC&printsec=frontcover&dq=related:ISBN1878823272

i got 6 plants vegging under a 400w in 4x8 space no room tho ( 4 weeks )

have 2 400w in a 6x6 room to flower

painted white walls and some foil

plants stay small don't get much off each plant

11.5ft x 6 ft? The potential in a space that large is HIGH.

But yeah Pinworm gave some good advice. When I was running a 1000w for a 5x5 space for veg and flo I'd put 12 plants underneath. Personally I'd go with the same number under a 400. Its all dependent on what style of growing you go with. I'd also use white paint as it seems like it gets hotter in the grow space with mylar. HOT.

No offense, but cant understand why noobies always want to attempt a small crop for their first grow?

Guys like I wrote,my walls are very crappy in that room,never did reonovate that room,its like inside ancient castle,now imagina i try to paint ancient castle walls,not good no? This is why I wonder what to do,does it work to put plastic around room so no light escape and paint it white? as I understand it will take not reflect light no?