Time to brainstorm!
A few ideas:
Find a way to get the house in the settlement. If there's little/no equity, get him to quick claim it over. Can you get the house by agreeing to less support? Can you get the house as the "family home" and he get his share when and if it's sold?
IF you can, then you have some options. How about a refi with an interest only loan? Take in a roommate? If you've gained a great deal of equity, can you refi and pull out enough cash to invest for a greater income?
And, if you can't keep it, watch every step of the process of selling. Do everything you can do to get top dollar. Take your share and use it to buy another house...one that you adore can let your roots grow deeply and do all the things you dreamed of... Make friends with a realtor or builder and a mortgage broker. Get their BEST deals.
I'll bet others who have done it can give other and better ideas.
You'll get those daffodils or tulips or whatever your heart desires one way or another.