Most recurves off the shelve do have a 28" rating. That chart above is based only on a single bow, not all bows. The bows usually start to stack because there is nothing left in the limbs to flex. The stacking will not be as abrupt with a longer bow.

You will probably find that your draw will be about 1-2" shorter then with your compound. Probably in the 30" range. If I were you, I'd try to find a bow that is over about 64" at 40-45 pounds at 28". Or if you can get a longer draw bow, then go that route.