I recommend going with turnkey deals in cashflowing markets that have a future like Columbus and growing your portfolio there.

After the election and purported rate cut(s) from the FED, I expect buying activity to pick up rather noticeably, which means more competition and likely higher prices. 

We have a flip that we completed and like so much that we are considering moving into it for a personal residence and refinancing it to a primary.

How much value goes down for a house with foundation issues, found a house for FixNFlip, they mentioned it has foundation issues and they got them fixed, but whats the value reduction from market price , How safe it is to purchase house like these 

Rents tend to rise over time, amortization steadily increases equity, incomes rise, so the investor has a lot of “cover” for unfortunate timing or operating “mistakes”.Number 2 - periods like 1932 - 1941 and 2008 - 2013 are much harder on this strategy.  

The majority of the time when an older roof starts leaking , its time to replace .Well, it sounds like you’re one of the members that has replaced more roofs than me.

Likely, a slightly larger buyer pool.Cons:Less revenue each month.  

I have been managing this one property where everything has been going well and housemates have been happy and even renewing their lease for the past couple of years with no complaints.

That will likely help the most.

There are a lot of note buyers out there in the secondary market that like owner generated paper.. if you buy cheap enough you can still do very well with the higher returns those investor expect.I help my land flippers I fund do the same thing even today..