There's a 2-stroke section on
homebuiltairplanes.com.
2-strokes have their advantages and disadvantages. Advantages are better power to weight ration than any 4-stroke, simpler construction, and lower cost. Disadvantages are higher fuel consumption (so maintaining range compared to a 4-stroke might be a problem), need to mix oil and gas, and and critical mixture (run too lean and the engine fries, too rich and you foul a plug). Also many (not all) 2-strokes are single ignition, which reflects the snowmobile heritage of many designs.
A lot (but not all) of 2-strokes bad reputation is from the early days when most 2-strokes were straight snowmobile conversions. People tried to ignore them and treat them like a Contentinal (add fuel, turn the key, and push the throttle forward), and had troubles. They
do require more attention than a 4-stroke, with seasonal carburetor jetting adjustments and preventive maintenance. As one example, a leaking crankcase shaft seal: in a 4-stroke, you lose a bit of oil and maybe have to wipe it off, while on a 2-stroke it's an air leak that fries your engine.
But even though I've been flying 2-strokes for over 10 years (and never had an engine failure related to the fact that it's a 2-stroke), I'd install a 4-stroke if feasible.