GD, for not knowing much about traditional gear you explained yourself very well.
Wolf, something else you should know is that most all traditional bows have a rated draw at 28" of draw length. Each additional inch over that 28" adds about 2 lbs more to the effective draw weight. So in your case a 45# bow would actually be drawing about 49-50# of draw weight. This is one reason Martin suggested you shoot a longer bow. In assence you would be overdrawing a short bow putting excessive stress on the limbs possibly leading to premature weakening or failure of the limbs. Furthermore, unlike compound bows, the speed (called cast) of tradtional bows gets greater as length increases. Also the longer the bow the smoother it will draw for a given draw weight. The proper term for this is stacking.
It's been a lot of years (40) since I shot a recurve, but at only 5'8" tall I shot a 66" recurve just for the reasons I stated above. This was prior to the compound coming on the scene and bows from 66" to 72" were quite the norm for target shooting. Hunters usually used shorter versions with about 60" being common, but these didn't have near the performance of their longer brethren.
One thing tradtional and compounds do have in common is that the longer the bow the stable it'll be when shooting. If I were you (suggestion) I would lean more toward the Howatt Hunter in the Martin line. It costs about $50 more but I think it would be a better fit and is only 4 oz heavier.
Don't count out some of the takedown models either. These are versatile in that you can get different length limbs mto fit the same riser. This can allow you to have different length bows with different draw weights just by switching limbs. One that comes to mind is the OMP Cascade. Try a little comparison shopping at www.eders.com. They seem to have a nice selection. I don't personally know anything about OMP; just looking at specs. You could also try a visit to the Traditional forum on Archery Talk for more info.
Hope my long post helps you a little.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver