Too Much Tire For My Car? Mt 305/45-18S Street Et's On An R/t

[mjf6866 1]

A friend of mine is selling a set of 18x10 Bravado rims with MT Street ET 305/45-18 drag radials off his hellcat that he sold and he's willing to let them go to me for $400. They have 2 passes on them. I know that's a good deal but I'm wondering if it's worth it to pick them up for my R/T 6speed. I have all the basic power bolt ons, a Dyno tune from OST, full SRT exhaust, full hopnot kit and currently use 17" cobra replica wheels with race master 275/50s which work good for my application. I know I'd have to get spacers for his wheels to work with my hopnot kit but are 305s overkill for my car? Would the diameter kill my launch? I do plan on adding a cam down the road and who knows what else. So I'll take all suggestions, but I'd like to move on this quick if it's worth it. Thanks!