Get yourself some DR's! 1st gear was still useless with 15" 295 Mickey DR's but I could mash it from 2nd gear on up and she would stick.
What pulley size are you running btw?
To the OP If you can at all get away with going with E85 I would go that route and dump the Meth injection. You are getting the same cooling effect that the meth gives you in the E85 and you don't have another supplementary fuel system to worry about keeping filled, having provisions to alert you of a pump failure, etc. You'll exceed the maximum cylinder pressure and hurt something that way before you'll get detonation with E85.