i would lube the core, and assemble untill you have one wing edge left, and put a little drop into the edge hole, put the edge, and work it in.
try overlubing the pins. it may feel a little sluggish, but they won't fall.
do the algorithm you want to memorize repeatedly untill it is stuck in your head. then do the algorithim on the cube every one hour so you don't forget it. do it right before bed and in the morning. hopefully you won't forget the algorithm.