If they'll look weak what can i do to make them look better without runnning the risk of rubbing or other problems and without running me broke

 

Do you have the wheels already? If not don't buy them find ones with better offsets. If you already bought them you can get spacers from 5-20mm this would make them sit more flush with the fenders. Project Kics makes good spacers (several vendors on here sell them)with studs on them but they aren't cheap. They are a little better fitment that stock so its not the end of the world but most guys on this site try to have a nice flush fit to the fenders.