4 of 7 rooms are already rented consisting of hair salons and a massage therapist.

an experienced landlord is not going to allow his or her tenants to be bothered by lookers ... so you list the property  buyer makes offer gets EM in POF and proof of financing.. then you set up limited property inspections and at that TIME buyer goes through units with the property inspection company.. and most of those are limited to looking at plumbing dry rot etc.. not a full home inspection like you would do on a SFR.at least thats how is done in high demand rental property areas that I have worked in.. and most of these transactions are 1 to 8 million each.. so your sophistication level of seller and buyer is much higher and not a wholesaler in sight...

His advice was to get a second plumber in to pressure test (verifying the leaks were fixed) and then wait a year to a year and a half for things to dry out.

To offset these negative cashflows, i plan on building out the portfolio a little cautiously/slowly right now and sit on some dry powder for when the opportunities are lying around on the streets....   

It's pretty dry and rents are low.  

I have had mold in 2 of my properties and have found that sometimes it is just surface mold that can be removed and dry wall replaced, sometimes it requires more intervention.

Your investor friend was right to tell you to consider your future, as I was a hair stylist once, and as soon as carpal tunnel (sorry if misspelled) set in, then I knew I had to find something different!

Being as cheap as possible, I get my hair almost shaved off so I only have to go pay them about every 3-4 months:) On a different note, I had considered trying to get more into commercial.

It is very cut and dry. 

Well, two days after listing the house we got multiple offers, some over asking, and I could not be happier and more grateful to God. 2017 was the year when I went through the lowest point of my flipping career (albeit a short 2-year one) after losing a significant amount of money and sleep and weight, hair, smile, relationships, self-confidence, and self-esteem.