Definitely learn to do it yourself. Glueing tires is something I just don't trust anybody to do. And for a brand new rim and tire, don't scimp on the glue. There should be a small bead of glue that squeezes out between the tire and rim.
Also, save yourself a lot of work and put masking tape on the braking surface of the rim. No matter how well you have stretched the tire and no matter how careful you are in putting the tire on, you will get glue on the braking surface, and no matter how well you think you cleaned the braking surface, the brakes will still howl and screech. You will immediately be branded as a noob if you have howling brakes.
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Il faut de l'audace, encore de l'audace, toujours de l'audace
1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1