I'll take a shot at some of your questions. I don't have the new Alpha, but I have one from 2 years ago.

Regarding the wing, the instructions tell you to join the wing halves with a 1/2" strip of tape. While this may work if you use enough rubber bands, I epoxied mine together, as do most folks.

The engines are supposedly pre-broken-in, but I think they still need a couple of tanks run through them before flying. Mine came with a glow plug. I think any standard plug will work, either the H9 brand or an OS #8.

The RX battery is usually good for at least 4-5 flights. I use one of those loaded voltmeters with the LEDs on it, and I stop flying when it gets below 70%.

And the new DSM2 radio is a full range radio. The AA batteries do not affect the range, just the operating cost

Good luck