Thank you all for your feedback!
After collecting opinions around the internet I am feeling optimistic about my project and ready to push forward.
A careful search and a long-lasting correspondence with Chinese manufactures revealed several options for CNC production (aluminum and carbon fiber) with an affordable price a small MOQ of 200 pieces for each custom part.
In the current design custom parts are used at least 4-5 times each, so my MOQ is ~40 frame kits.
Therefore, together with my friends we decided to make a crowdfunding campaign (with a fixed goal that corresponds to the MOQ). We have experience in CAD drawing/modeling, CNC production and project management.
However, it looks like we should have taken more care about the media, as no one yet knows about us.
I hope to solve it soon and will be grateful for any help with spreading the info.
Personally I would rather spend more time on tests. I have recently got samples for leg mounts. Such detachable landing gear will save a lot of space. Currently I am thinking about an experiment with dynamic stress.