If you bought a certified aircraft, you'd be trusting the upkeep to an A&P. No reason that you can't do the same with an experimental.
No matter what, you'll have to learn your way around the airplane, understand the systems and their maintenance schedules, and learn to supervise your shop. Common sense items, like getting a written estimate before authorizing work.
It's best to find a shop that allows owner-assist and will teach you do do basic work like your own oil changes. That will save you money and also put you better in touch with your engine.
Even reputable shops take longer and cost more than you would like. It's part of being an aircraft owner.
Preferably find the shop on your home field, unless it's awful. Otherwise you'll be shuttling your plane to another field, Ubering home, Ubering back a few weeks later, discovering during preflight that something wasn't done right, Ubering home again, and then Ubering back to try again.
David