i wouldnt say it would be good, any pipe on its own with a pretty much stock scooter isnt that good. You will still see positive gains with just the pipe though, that pipe is also good for the stock 50cc barrel
the hebo should be fine, you will notice a performance increase but no exhaust will give world beating power alone. i'm not so clued up on the speedfight range but generally speaking, the hebo is very under-rated. having never tried one myself i'm not going to make a judgement.
yeah im not too big on speedfights either. the hebo performer, leo vince tt or zx, and the laser x pro are all good pipes for the standard 50cc barrel regardless of scooter