I have a Schecter C1 Hellraiser 6 string with a 25 1/2 inch scale.......

I'm thinking that 13-56 would be the right string gauge for B tuning right? I know I need to adjust the bridge and intonation which I can do but I've never adjusted a truss rod before, will I need to worry about that? Thanks.
you'll probably have to adjust the truss rod. there'll be less tension on the strings and the neck will bow back on you. i'm just not sure to what degree it will be though. you might not even notice it
Signatures are overrated.
Maybe Ill just take it to a place and get it done.....cuz I'll probably want the nuts widened a little too.