Totally not what you asked, but where are you getting 2.99% for a 5 year term? My mortgage is coming up for renewal beginning of September, and I would love to lock in a rate like that. Eventually my almost-ex husband and I will get the matrimonial home sold (finally filing for divorcee has finally got him moving on that), and then my share of that money will go to pay the LOC and mortgage on this house, but that isn't necessarily going to happen before September.
Sort of on topic, you and your DH were having major money issues. You were thinking of seeing a lawyer to figure out where you stood and what your options were. Rent versus buy, and how the money from the house would remain in your name only and not joint, if possible, is also something you should discuss with your lawyer. If it is joint, try to get it split and 1/2 into each of your names, then he can blow his half without hurting your half. For me the matrimonial home has been an albatross around my neck, I truly wish we had been renting when we split. It doesn't sound as if you will need or want this house long term.
Good luck.