Here's something like what you are talking about.
This plane flew great, was actually even quiet when he was flying at lower speeds.
A friend of mine makes flying wings with a modular approach.
All of the electronics including the power system are attached to the wing with industrial velcro.
You can check out his designs a ExtremeWing.com. I'm fairly certain he has a series of pics showing an EDF
velcro'd to one of his wings.
I've recently been experimenting with zip ties. I'm confident that you could zip tie it on there with good results. I don't know if you are looking for a permanent mount, a swappable mount, whether it's a fly around with plane, a combat plane or an FPV ship.
In any case it looks like you are preparing to have some serious fun. Please post a pic or two once you get it set up.