For such a property I would want to get it at 2k a door to 3k a door for the work involved so 40,000 to 60,000 purchase price before rehab.If you get lucky between now and the property fully performing which takes with apartments about 12 to 18 months depending on size you could get cap rate compression of sales prices where instead of your projected 8 things are going for a 7.

In order of preference I would use a compression fitting before a sharkbite.As for pex, I use it here and there.

Slightly above minimum wage but less than a skilled laborer e.g. a certified welder.In one week, he will work 40 hrs and make $400.00 gross.In one month he will work 160 hrs and earn $1,600.00 gross.If you were really hands on and compressed all your time together on one wholesale deal......marketing to find the deal, sorting through the bad ones to get the good one, figuring repairs and ARV, getting it under contract,  phone calls, marketing to sell the deal, showing the property etc. you would be in it for say roughly 40 hrs from finding it to getting it sold (It may be more or less depending on your skill level and your network but lets go with 40hrs).Say the deal does not have a lot of wiggle room and you charged a fee of $1,600.00, (what the factory worker makes in a whole month) you would have made $40/hr in that one week and you would still have 3 weeks left to go find 3 more deals or take a break if you wanted to.Say the same deal has more wiggle room and you charged a fee of $5,000.00, (what the factory worker would make in a little over 3 months) you would have made $125/hr in that same one week and you would still have 3 weeks left to go find 3 more deals or take a break if you wanted to.Be reasonable. 

RE is seasonal too, you may average a closing every other week, but you'll have dead time in the winter, we lose about 3 months due to weather.Adding dead time, in 9 months you'll have about 1,666 hours compressed into 9 months. 2.78 deals a month, 66.67 hours of one on one contact of 185 hours.

Currently, the market is experiencing cap rate compression due to higher demand in general.

LOL At least he's not completely against homeownership for all.All of my compression plumbing appliances have vinyl under them that goes up the sides.

UPDATE:Had the owner of the company come through on Wednesday.Master plumber with over 40 years experience.Very nice and professional.While were there fixed too emergencies.One the p trap was leaking under the kitchen sink and water was going everywhere.Another unit water was coming down from the upstairs through the kitchen.That ended up being the metal line going into toilet tank.Someone wrench tightened the line going into the tank when they were only supposed to hand tighten.This caused a crack in the plastic seal and the water then started pouring out.The plumbers fixed it.When he came out on Wednesday he looked at 2 units.He said to do it right he needs to have 2 of his plumbers out there and go unit by unit.They will check all fixtures kitchen,bath,washer,etc. and do compression test.

High touch asset selling at low cap rates based on bubble number assumptions happening over the last 12 months. 4 to 5 years ago buy MF at a 9 cap and let cap compression and rent growth do it's thing.

Retail, you will pay somewhere in the $250-300+ /sf range but if you partner with a builder you may be able to compress that number down to 150-200/sf.

If you get problems after you have done your best to keep the water away then it's either a deeper compressible soil layer or the house was built half *** (usually this is the case).The engineer in me says "based on the pictures and information provided it appears that normal shifting and/or settlement of the foundation has occurred in the area of concern and further remediation/monitoring is required to reduce the potential of further subsidence" ect. ect...