wow, that's coming together nicely! i also thought the blue wires are a little on the thick side, but if that's what's available, you gotta use it!
my sd->microsd adaptor finally arrived and now i'm waiting for my 128gb kingston. when i got it i'll do a quick check to see if it works on my sensation xe, but the goal is to integrate it "completely", so the battery-cover closes securely, since i don't use any case to "cover up" my doings.
i hope i'll get it next week and will keep you updated!
the only thing i worry about it that by the time i finish this lil' project, there'll be 128gb-cards in micro-sd... ^^