Plenty of 8" regularly stocked wheels with more than 4.5" BS out there without going to custom wheels, if you're not stuck on the Superlites.
Just one example - Boyd Coddington Junkyard Dog's are available in both 4.75" and 5" BS for $261.00 per wheel at Summit:
Other wheels in 17x8 go all the way to 5.5" BS:
5.25" Vision
5.5" AR
Bottom line, good looking affordable wheels with decent BS are readily available.