62-64" longbow would serve you well. Can't imagine that the poundage is that big of an issue here. Although it may seem like quite a bit to most, to the bow it is really not that big of a deal as long as you use a heavy enough arrow. I would say that you should have concerns about choosing the proper takedown. Although some boyers have no problem with there TD systems on bows up to 60lbs., these same systems wouldn't fare too well above that mark. The carbon fiberglass sleave TD system has been tested to over 1500 psi and when it finally does fail, it happens in places other than the TD portion.
More than adequate for the higher pound bows.
BigJim