We had an excellent carpenter make carcasses of builtin wardrobes, to our design so we had hanging storage etc.
The plain white doors were ordered and hung a year later by the same man.
30 years ago this still cost several thousands but saved us thousands doing it this way and because they were plain and timeless in design, still look great.
We painted the old teak doors white sharpish once the cost of replacing sold doors became apparent....we still have them as they were perfect when painted white...by my husband.
We are very MC professionals and this was very normal in our circle, who bought large older houses that needed huge renovation jobs.
I actually think you make fewer mistakes when you live in a house and do jobs like these over a couple of years.
Likewise landscaping a large old garden. The basics were done by others like clearing the place out of everything dead and dying, new gravel etc., but we did a lot ourselves like new planting, digging out beds etc over a couple of years.
Curtains were another huge expense, putting up new poles throughout the house.
We could have paid a couple of thousand for someone to do this, instead my husband spent two full weeks of evenings after work, putting up new poles throughout the house.
When you work hard for money you don't half value it.
I really hope you can row back on some of these costs and save your marriage.