Your Hacker is an inrunner, not sure about the Mega. We've done alot of testing to get a lightweight motor that will work with out stressing the batteries or getting too hot. The key to this boat is using a high Kv outrunner (2600kv milehigh r/c 400DF). The outrunner has the torque because of the design, and the high Kv gives it RPM's. Sort of the best of both worlds. We are using a Pro lite 1320 3s pack from Thunder Power. Not sure how your setup would work in this boat. You would have to do some experimenting with props and batteries.. We are sort of treading new ground here, so there isn't much info to go on.

As far as a first boat is concerned, it's not very difficult to build and set up. The kit is all precesion laser cut with slots and tabs for alignment. With your airplave experience, it shouldn't be too difficult.

Red