Not fast enough and not enough energy.

for a 180 lb draw you should be getting way more speed than that.
I use an inexpensive Horton steelforce for the last 9 years. 240 fps with the stock 17 inch arrows. I switched to heavier 20 inch carbon arrows. 24 inch arrow would drop like a stone. My experience has been a longer arrow gives more stability in flight and doesn't drop as fast.....like a boat cutting thru the water. It's just more efficient.
Also,, where are you going to find replacement arrows for that? you'd have to have them cut special or order from the internet every time. And I doubt they would be of a quality that would please you. Also, accuracy is going to be more of a challenge with short arrows.