Good to see the build is going well man. I have a friend who is a paraplegic due to a job site accident. He is a big Honda fan and did a similar tranny and hand control swap on his 92 Civic hatch. His biggest issue was getting in and out of the racing seats. His solution, he adapted and installed a swivel seat mechanism to the seat. I just gave him a call as I thought it may make your life easier. The exact bracket that he used is a Garelick 75090. It allows the seat to swivel, lock in place and slide forward and backward. It's made for a boat. He had to do a some fabrication to make it work, but it works well.
BUILD# 840 out of 3985 BUILD DATE 4/1/2003 *RIP*
2003 Competition Orange SVT *Revived*
2012 Black Sonic 1.4 Turbo LTZ