Just a thought....You may want to make that maiden flight at the field. There will be onlookers that may notice something you don't prior to liftoff. Also, should something go wrong you will have many eyes to help you analyze the issue because you will be concentrating on getting the plane airborne safely.
Don't snap the plane off the ground. lift it slowly and gently to be sure you don't stress anything on liftoff.
It looks great.