All excellent points to consider. Let me add one more.

Take it easy on the very first flight and mke it a short one. Long enough to trim out and maybe do a couple of rolls and loops to see how she performs. Does it spin too fast, or not fast enough; does it snap out of a loop? Next attempt a landing at 100 feet. What I mean is slow the plane down to landing speed to see if has any ill effects at slow speed. It's much easier to recover from 100' than close to the deck.

Finally land the plane and take the wing off and check that everything is OK. No wires binding in servo wheels, broken servo mounts, etc...

Now make any adjustments, fuel it up and wring it out.