are you planning on staying awhile? think of an idea to rig it in case you move and you can fix any damage to get your money back for security deposit...anyway if you go pendant your gonna add fans so figure an extra 75$ in fans, and that center brace i wouldnt worry about it with a 250, thats 6 inches from the brace, use a fan to cool each bulb and you will be fine, i places a sandwich baggy under mine about 3 inches from bulb, and it didnt melt, it was there for over an hour, now that center brace is a hard plastic.....i think the only thing to worry about would be the shade spots it will create...the mh wont penetrate through it but the other bulbs will shoot around it, you wont notice anything untill you add a coral directly under that brace and see slow growth...slowly but surely you will decide whats best for your situation of living....