I have tried doing it with a single batch, and the results were tasty but far (far) too fatty, and as a result the sausages lost considerable volume during cooking.
I went back to a mix of belly and shoulder and it's far better, IMO.
10lbs of belly only needs you to buy about 20lbs of shoulder for the right ratio!
Your other option for using it would be recipes with other leaner meats like game, where they need fat adding from additional pork belly in the mix.