keep at it man... that's gonna be badass (yes, it's going to happen). i definitely think it's doable for you.
i would like to mention- dont give up on doing that show... it seems you've been talking about some day doing a BB show since i came here to MAB. you've come a long way dropping weight, dont lose sight of that goal because something else comes up and distracts you... you wouldnt want to start focusing on strength and then realize you want to do a show...
... just think after cutting that long how bad you'll want to eat like crazy and get your strength up!
you got nothing but time big man
... but seriously, it seems you will have quite a lot more years on the + side of lifting (not trying to say your old, just that some day things will go down hill)