I use a 12" older craftsman to cut bows from staves, mostly osage. It works great for me. I use the 1/2" blade with 4tpi.
If it is in good shape, buy it and use it until you find a good deal on a 14" model. Then sell the 12" on Craigslist. For that price, you should be able to resell it and break even. Who knows, you might find the 12" works fine for what you need.