If your limit is up to 1740 then WSS is really your only option. If so I would start to look at Ebor and Front Rank but there is a lot of small ranges out there with bits and pieces that could fit that period. If you would go for SYW 1750-1760s I would look at Foundry, Eureka, Crusader and Perry, in the latters AWI range you can find a lot of variety that also can be used for SYW/FIW