I've read all of this thread. Some good advice has been given.
My wife and I have been married for almost 39 years. We lived in a time when it was frowned on to live together without a marriage certificate. We've had our spats over children, money, etc. She's the spender. I'm the saver. Trust me, we're like two poles of a magnet.
However, it takes two people with opposite personalities to make things work.
My wife didn't have to work for most of the years that our children were growing up; so, I had to budget closely to make sure we had a roof over our heads and food to eat, with maybe a little left over for other things. During that time, I made sure she had some of the things she likes to have because she allowed me to do likewise. We usually discussed big ticket items and agreed on them before we did anything. She did babysitting for spending money; and, she spent every penny she made on clothes, fun things, etc. I took care of everything else. There were still times when we disagreed on monetary items. She'd spend money we didn't have budgeted for something; and, I'd get upset that she did it without telling me, first. You have to work together, if you want a marriage to succeed. Money is one thing that can quickly break up a marriage.
When our kids grew up, I was fortunate enough to retire early. She had gone back to work to have something to do. The bread earning roles changed. Before she went to work, we agreed that she would have to take on some responsibilities; or, I could not afford for her to work. I'd be stuck with paying extra taxes and have nothing to show for it other than our house filling up with more clothes than she can wear in a lifetime. She pays the utilities, buys groceries, and takes us out to eat. I pay for everything else. Yeah, it sounds like she's getting the shaft; but, she isn't. My outlay for things like cars, insurance, taxes, home repairs, etc cost more than she contributes. I think she likes to contribute, now; and, she has plenty to spend on herself. So far, this has worked for about 13 years. Right now, I'm trying to get her to retire. My SS will kick in, this year; so, there is no need for her to work. I can't get her to quit! I'd give her an allowance that matches mine; but, she won't quit. She likes her independence, too much.
This plan has worked for us. She still spends all of her money; and, I still save some. We have more money than we've had in our lives because I held onto some of my income. We still have fun things. Neither of us wants for much. Shoot, we just bought a car so we can attend cruise-ins together.
BTW, both of us have moved to places we didn't want. It goes both ways. It sounds like your place may be a good place to start, not some place that will strain your incomes before you ever get started. You can plan to move up, after you see how things go. Kids today get into big financial trouble because they chose to start out big without figuring out how to pay for it. All that does is ruin your credit rating that you will need all of your life, unless you're filthy rich.
For now, you might consider living together to see how it works. Have three checking accounts. One for each of you and one that you share. That way, each of you has money you can control for yourselves. Get rid of all credit card debt and other bills you may have. You've agreed to pare down the horses to one. That's good since you can only ride one, anyway. As for the car, is it the only one you have? To go to work, you need a car. My wife always had a car, even when she didn't work. I look at that as an essential, unless you're like us. We have four cars and a truck. That's a bit over the limit for two people. We're trying to sell one of the cars.
If you two can't sort things out between now and October, you can split up and will have lost nothing. Once married, it's harder to undo. Make sure you know what you're jumping into, first. Both must learn to give and take. Neither should have to give up everything in the other partner's favor. That will never work.