RE: What motor do we need ???
If your plane weights 19oz with the battery, receiver, servos and speedcontrol I'd look at the Himax 2812-1080 that can handle up to a 32oz airplane. This motor will make that plane a fast and high vertical flying plane. If your plane comes in around 22-26 oz I'd look at the Himax 2816-1220. This motor handles 40 oz planes.
Bevo