6-8 months practice with the tools? Sounds like you'll be damn prepared. You should definitely start looking into the tools on Back Track 4 as well because in that time my guess is that v4 should be stable and they may have out the Off Sec 101 v3 class that's utilizing Back Track 4 as an attack box. If I were you Xen, I wouldn't underestimate yourself, I don't know your schedule but you are given that 30 day lab *or 60 day* access which is a perfect place to practice and gets that hands on training!
eCPPT (Silver/Gold), GSEC, GCIH, OSCP, OSWP