Each person has different standards and techniques regarding cleaning, I’ve had to learn not to supervise and correct or nag about those differences. We divvied up chores before moving in… I hate dishes and he cooks, so the kitchen is his domain. He was paying for laundry service before we moved in, and wears jeans to work, I have to dress more professionally and have more delicate clothing, so I do the laundry. Everything else we share as we go along.
The same goes for finances… it is best to discuss your approach before moving in. There have been other threads discussing couples and money (as well as other threads on moving in together, so you may want to search the archives). In my past relationships, One had a yours, mine, and ours approach and we each put in a percentage of our pay into the shared account. In another, we kept it separate, but I paid for almost everything. Now we’re both in 100%, we both keep an eye on things. I’d like us to be more frugal and he’s very laid-back; but I don’t nag about it.
My adult son lives with us, so that was an adjustment to a man who had been a bachelor for decades. However, we set him up in the master bedroom, so he has a lot of space and his own bathroom – almost a studio apartment, since he got a mini-fridge. But he’s very respectful, and he comes and goes as he pleases. When he had his girlfriend for a couple years, she also had a key and came and went and was respectful. We usually include him when we eat at home, and often invite him when we’re going out to a casual place.
As for alone time, we are both introverts, so much of our alone time is spent right alongside each other. Our jobs are also >100 miles apart, and we tried to find a home that was halfway, and our long commutes are also alone time. My commute was my alone time when I was cohabiting with extroverts and my child was young, too.
Being respectful of the differences and not taking things personally is the key. Talk about what issues are most important to each of you and agree on what compromises each will make. If either of you have very strong opinions or there are marked differences of opinions and if you are willing to be pragmatic about it, you could even write up an agreement that can be referred back to if needed.