Any plumbers on DU?

[Wash. state Desk Jet]

5. It doesn't have to be done at the same time .

you thinking bank loan for the repairs/remodel ! You might want to find out first what yer in for with the plumbing issues.
A good plumber can detect leaks and has the equiptment for that if necessary. Also such equipment can be rented and it does not take a rocket scientist to figure out how to use it.I would break down your project into phases starting with the plumbing issues.
From there yer bathroom up grade than on to yer kitchen.

Actually hussin ben sober is into the remodel game and has lots of good advice, I'm retired !
I have been remodeling a 80's apartment building now, one unit at a time for about 15 years. New kitchens, new floors ,new bathrooms ,everything new and upgraded, two floor apartments.When I do that the units are empty and stay that way until the work is done ! Nobody is going to be able to stand living in my work ! 7 done,one left to do whenever the tenents move out. Hopefully not to soon, after that I'm done with it all.

The units are down for about 2 months .Since you have to live in it, you might consider one project at a time- spacing it out.