I also have fine hair. I just got a touch-up and my hair is way too straight and flat. Rollersetting,using setting lotion or mousse, and putting rinses in my hair helps me to gain more volume. I wore my hair pressed during college and people said that I had "Oprah hair" because it always looked so full and healthy. If I could transition without waiting so long, I would do it in a heartbeat. Having fine hair makes you more prone to breakage if anything goes wrong, so really think about making the jump to relaxer and be prepared to lose even more volume due to the straightness. I go 10 weeks between perms, but I am going to go back to 8 weeks because my hair starts breaking after longer than that--no matter how gentle I am. If you do decide to relax, don't make it bone straight. Some texture will make your hair look fuller. Good luck!