Should I replace it all of just replace everything other than the ceiling lights wiring?

From experience, you will need to replace items (some  costly), do repairs, and cover insurance and taxes (even if you include them in you payments). 

The 3/2 is very similar, just has carpet throughout (has a long term tenant in place, but I will replace carpet with LVP when tenant moves out. 

And if the timing works out right for you it will be just after the next crash and crater in regular real estate.BTW - Even if you end up focused on MF, a good DST can be a great back up option to save the 1031 if you can't find the right replacement.

And when the response was for a full replacement, they should have sought a second or third estimate.Here's the bottom line.

Just replace them.

Replaced fill valve and supply line" and the charge came to 243.50 (this seems reasonable for call and the fix). 

Looking for a general contractor to get quotes on the following:-Replacing cast iron plumbing for PEX-Remodel bathroom-Replace cracked foundation in 2 car garage-Convert 2 car garage into Studio ADU (approx 340 sq ft)Any recommendations would be appreciated! 

Everything was gutted out and replaced.

The fact that REO properties are always AS-IS has nothing to do with the fact that many sellers of real estate are offering their property subject to inspections and negotiations on treatments, repairs, and replacement.