I love it!
Naturally I have suggestions.
A.
First, I get the budget constraints on models. Guys that already own the expensive and need to learn how to use RC gear automatically go to that "better solution". Plus they have years of experience controlling a model that is at off angles. There's a great low budget cheat.
Build glider ( duct tape a rock where the engine goes ) free flight models and get the general shapes and relationships figured out. Don't bother with complex slats on the first ones, a fixed slot is easy to carve in foam & you can tape over it. Take it to a local RC glider hill once you've got it flying really good in your back yard, and be friendly and receptive to the special modeling ideas they have.
Here's the CHEAT! At some point, when your cheap free flight model actually impresses a local you've met. Offer to build the next one with places for the RC servos, and maybe motors, and give it to him to finish and test fly while you observe and learn more. He's going to be much better at skills ( than any inexperienced RC idiot, like me ) and the time before he wrecks it much longer. ( may be weeks, instead of first try )
If your ideas are good you might have multiple models in multiple hands, be a published model designer, and have guys begging you to make them one, please! And dropping off minivans full of foam boards and supplies.
Meanwhile you will have refined your design so the full sized almost final version actually works well.
B.
Don't get too married to a particular feature. Function over pride, every time.
For example, if you already OWN a half-VW engine set up with a prop hub, then sure, your budget limits you. Use it. If you don't already own one, then the best budget solution might be getting used paramotor packs on Craigslist. That's a Terrible idea if you want to paramotor cheap and aren't already an expert on fixing high power tiny 2 strokes and inspecting welds! But may be the cheap and smart way to get a working engine, mount, PRSU, and the hands on experience of rebuilding them. Cheap.
Or if it turns out those lovely leading edge slats inspired by a Superstol are unnecessary, then don't waste money and mass on vanity. ( I like them! They have been great performance enhancers on many designs for a century )
C.
Detail thoughts? Configuration opinions.
I don't know diddle about free wings, Spratts, etc. The guys who love them think they're Awesome, but I don't know how well they actually work. I'm skeptical and ignorant. So... No informed opinion.
I like Junkers type ailerons because they make wing construction easier at the cost of some drag. They Work. See Kitfox.
The bad news is on a forward swept wing they may suck as elevons. The good news is your design has a tail in the perfect place ( as far back as possible ) for a decent horizontal stabilizer and elevator. Not, perhaps, as sexy, but that is proven to work.
The biggest advantage of a wretchedly conventional tail,
is it gives you the best leverage to overcome pitching moments from airfoil and engine placement. The rest of your design ideas are easily groovy enough to compensate for the one conservative feature that will make it work much better. ( not sarcasm, open ego manipulation! )
Carry on! Neat!
