You can pick up a cheap set of lowering springs for roughly 100 bux or so, Not cheap ebay shit, and it will usually lower you enough to look decent and you normally will end up with a semi decent ride. 18's are bit big depending on the Generation of Accord ( You didnt say) Normally 16s with a decent drop, but you can retain a good ride with 17's and a smaller drop, usually reataining a better more stock-like ride.
Looking at springs, on a budget, B & G makes a decent set, as well as cheap Eibachs or Tein. Just please dont buy EBAY SHIT!!!