I will also be moving around a couple of small walls.

This is a snowy depressing midwestern hellscape of dirty, broke, unemployed tenants with 21 dogs and they cook greasy foods and touch all the walls and sit around all day smoking tweeds and trying to stuff q-tips in the drains! 

Having a copper hot water line behind the stove is not as big of a deal, as long as the stove doesn't squish the water line if somebody tries to push the stove all the way back - either run the water line in the bottom corner of the wall and floor behind the stove, or maybe install some small wood or metal blocks against the back wall to prevent the stove from being shoved back that far to squish the pipe - but make sure the anti-tip bracket for the stove still engages.

Tenant A moves in, trashes the place, lets their animals crap/piss everywhere, paints the walls black, lets the lawn die, doesn't pay rent and utilities for four months, and then disappears.

When you are this far, and you orient the toilet straight and tighten down the bolts, but not too loose so the toilet won't rock and not too tight so you don't break the porcelain & with the tank far away enough from the wall so you can fit the lid onto the tank but not too far away so it doesn't rock when people sit on the thing and when you connect the tank to the bowl you remember to use the rubber ring and when you insert the ballcock stem you get a good seal and you set the water to stop before it overflows the tank when you turn the water on and you use plumbers tape on the threads when you connect the hoses, you should be fine.

We will need to basically nock down the existing office and break room walls, build all the units, and install a security and access system.

When we had been talking to the bank originally they made it sound like we could do 4-5 investor loans, but now we ran into a wall after our first purchase.

Save yourself time and energy and just go trash all the flooring, walls, and yard yourself.

That has slowed down the HVAC and dry wall guy.

Electrical may present a problem since the interior walls are not always drywall but a thinner fiber board or panelling.