There was a time when the TC visits granted you an insurance break. Maybe again, someday. Otherwise, an A&P might be as much or more valuable though the TC will have more knowledge regarding the certification process and is less likely to want to do everything the FAA way. I found input from fellow pilots who were A&Ps (in some cases IAs) invaluable when I ran into problems but I sometimes had to remind them that 'Experimental' allowed me to do some things that they could not do with a spam can.
My advice specifically for your project: get as many people looking at it as possible - other builders, TCs, A&Ps, even non-RV pilot/owners. When somebody asks, "Why is this ... ?" or similar you will either find something you hadn't noticed or review something you had already decided on. Even the review is not a complete waste of time; other people often know a trick or two you may not have thought of. My plane is flying, I'm a TC, and I'm still getting good feedback on my project and changing things here and there.
Someone once said, "The trick is to keep your mind open enough to let ideas in but not so open you can't keep any ideas..."

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Patrick Kelley - Flagstaff, AZ
RV-6A N156PK - Flying too much to paint
RV-10 14MX(reserved) - Fuselage on gear
http://www.mykitlog.com/flion/
EAA Technical Counselor #5357