Are you saying 45-50#@28 and, you draw 25, or you want it to draw 45-50#@25?
Regardless, I would think just about any short hybrid would work for you -- a Shrew, Centaur or ACS, for example. A short recurve like a Bear Magnum would also do the trick. All of these bows are going to feel and shoot quite a bit different from a horse bow.
IMO, horse bows draw extremely smoothly from beginning to end and give a lot of zip to the arrow for their poundage. The bows I'm suggesting will have more preload, i.e., they'll feel heavier earlier in the draw. They all will have a pistol or locator grip and be cut to center or past center. That's a big difference from the straight grip and no arrow cut-out of a horsebow. Both features contribute to more consistent hand placement, arrow flight and accuracy though.
For what it's worth, I've never found a little extra bow length to be any trouble in moving through the woods. In fact, I find I get hung up more with shorter bows. Brush tends to catch in the larger space between the string and limb tip on a shorter bow because of the higher brace height. Also, I use the longer bow to quietly part brush in front of me with very little movement, threading my way through, so to speak.
I expect you'll get lots of other recommendations as well. Good luck in your search