I've done this. If I did it again, I'd put everything into storage, rent for 3 months and go for it in the fixup place.
We had 2 weeks before we got in to get the electricity and heating sorted. Unfortunately kitchen wasn't done when we moved in, so had to go to the pub a lot
However, we didn't have the money for that, so played chinese puzzle boxes for a year in a house that needed: pest control, new kitchen, bathroom, rewiring, replumbing, walls knocking down, windows replacing, totally redecorating, doors stripping, 5 fireplaces putting in, floors stripping, extension downstairs, extension upstairs . omg.
I lived in very mucky clothes for a long time! Have plenty of moisturiser at the ready too! Don't unpack more than you need to. Give yourself time to enjoy your projects and build in some respite time.
Get one room sorted, an oasis of peace (we sorted ds1's bedroom, then the sitting room). We are currently redecorating ds1's room 10 years after we moved in - I've just taken off the borders he picked at as a baby. sniff!
Buy in labour when you can for complicated stuff, do things well as you go along rather than skimming over.
I sanded floors myself and saved a fortune (it was easier than I thought and very satisfying).