I have a little trick. If you end up having spots UNDER your T5's where you can't hang cfls, walmarts carry bottle lamp kits. They're different by having the cord come out of the side of the socket. I take an inverted clay flower pot & use that instead of the bottle. Nice & bottom heavy & tip proof. Then you can place them where needed under the T5's where you can't hang the cfls. You never know where you might need under/side lighting untill the plant bush out & get dense. If you need to raise them, just stack more clay pots under them. That's my favorite trick & has helped me save many a bud site that wouldn't have enough light to produce otherwise.
BTW, these kits are only around $3.00. How cheap & easy is that? (I like cheap & easy )