Converting to premium when visa extension is under normal processing

I have valid i94 till October visa extension is under process now…is it a good idea to convert visa to premium now? Bcoz one of my friend is saying if visa gets rejected u can apply fresh1 before oct10th…and-my lease is already over and spending $250 extra per month(month on month). I want to utilize this money for premium processing…if we apply fresh h1 again do I need to go for lottery process again? I got receipt number just 20days back(normal processing)