RE: Finding a niche
Like MinnFlyer, I've been doing this for many decades (~55 yrs) & again like MinnFlyer, I don't think that I have a real niche. I fly most everything under the sun that I can get my hands on -- from gliders & U/C to most types of R/C. I like burning holes in the sky, messing with 3D, flying scale & sports scale, flying floats, flying fast & flying as slowly as I possibly can. I still fly trainers as well.
I haven't flown heli, or a gas turbine, but I've flown rockets & pulse-jets.
So --- no niche.