Welcome back,Hap :thumbsup You're doing great so far.
Don't worry about the list of "Thing"-to-do...you're well on your way.
Forgive me for perhaps being direct,but if so much time,money and effort is involved,and you would want this to be a success,why set a deadline for yourself?I see this often and keep scratching my head.You probably build this costume once in your whole lifetime,but conventions will always be there.Why not take your time and visit the convention anyway ?
Just a thought/opinion in general.
Good luck for now !