Newbie needs help building (please)!

whats up yall im a new guy who needs advice. i have a room 15'l 6'w 10'h and im starting from scratch. i have jorges grow bible and dvd (which i read/watched like a million times lol) but i didnt get brand names for all the pieces for settin up the room. i seen a nice price for a all in 1 setup for 10girls but i think i could build something bigger (roomwise) where i can expand to more plants after i get the hang of things. i have $500 for the job but i still need to buy seeds so does anyone know of a setup that would work for me?

id say get a 400mh and start your moms growing while your setting up the rest of the room since it will take them awhile to get big enough to make a good amount of clones.