Not at all bad, the only thing I notice is that longer and shorter doesnt make much sense :P

For rams, I know zip about the sizes but I generally use 70mm bore as a benchmark for a decent flipper, going up to 100-110mm (or more if youre crazy) for a Gravity-style mega-flipper and about 50mm being the minimum to get any use out of. I may be wrong in my reasoning, but really at the end of the day its still a flipping thing, however technically you describe it