Seems like your life is on an excellent path.
My main advice would be learn how to cook. It should help you on your fitness goals regarding working out, jujitsu, etc., And luckily the internet is free, so you don't need any cookbooks. But some of the best dishes I have made are things I cobbled together from stuff in my fridge (putting some bacon in a pan, searing the fat, then searing some broccoli with it - delicious!). There are plenty of sources for this.
But I would highly suggest being careful with the carb dishes. Mashed potatoes, rice, corn, the stuff that is just carbs tends to add quickly to the fat. And if you're cooking up delicious vegetable dishes or meats, those tend to have more salt and carbs and fat than you'd expect.
And if you're worried about losing out on some dating chances, take a picture of you cooking and put it on your platform of choice. It's definitely been the reason I've gotten some dates.
Regarding dating and you being in a small town, without knowing how big it is, the only way to actually expand your dating pool is probably to move somewhere with more people. Probably not what you want to hear, but that's the way it is. On the other hand, with a house, stable job, income (assuming it's average), good shape, and early 30's? I'd imagine you'd clean up.