I would highly recommend Walt Aranow (EXP SERVICES) based at 52F in the DFW area. Probably a 2 hr flight from you. He?s a Garmin dealer and a top notch talent. He did my RV7A panel (new build) 2 years ago and now 220 hours later I have not had any issues. I have dual 10? G3X touch, GTN 750, G5, autopilot,etc. Let me know if you want to see some pics.
Mike Ciaccio email@example.com