4x4 grow tent help

ok so im about to finish my first grow
in like 2-3 weeks


i was looking to buy a 4x4 grow tent and have my next grow in there

i was looking at my plants doesn't look like i will get a big yield this time around

i have read about SOG
and ScrOG

i was wondering if any of u guys had experience with there methods and if so
can u guys help me decided which one is better for me

i want to stay with soil

and if u guys can give me advice on how to get the biggest yield in this area

tell me how big of light to get and all that good stuff

i need to buy everything all over again so like fans
vent and stuff
if u guys have your own setup and can show me pics
:]
thanx alot guys

no help??????