Grow tent setup, advice please ready for flower

I have a 10x5 grow tent, I have 8 plants that are 8 weeks into veg, i have 2x 600watt hps. I have attached pictures of how everything is currently set up, I am wanting to flower within the next couple days. Was wanting advice to where my best harvest would come from weather it be keep it how it is with 1200watts on the 8 plants (in half the tent the 5x5 space) or move them out and use a 600 on 4 plants each side since i have the room or i could possibly use 3/4 of the tent and just spread them out when they require the room. Also thinking about tying down the main colas to get more light penetration to the rest of the plant but i can see me running out of room pretty quick only using half the tent. thought i was prepared for this but being so close to switching to flower im questioning my thoughts about what to do. Also this is my first indoor grow haha. bigger harvest the better.
cheers all

Well, once those babies stretch you are going to have a tent full, so use the whole tent. Nice grow.

Thought that might be the case haha sorry just started to freak out knowing i'm switching to 12/12 tomorrow, want nothing but the best for my pretty girls cheers. been thinking about it a bit more the rooms there so why not use what i have to. typed this up while there was a powercut here for a few hours, haha guess thats helped me make the switch too

With the length of veg time you gave them mate they will fill the whole tent for ya by harvest time...nice grow..