Another strategy one of my clients has been doing is picking up properties at auction or really beat up on-the-market houses and fixing them to increase cash-flow.

So the insurance change from a home insurance to a rental insurance (owner will live in one unit and second unit has a tenant) and the priced increased more than $100.

Property prices went up 26% since last year because of this increased demand -- I'm still not 100% sure this is the reason but locals say it's because folks in nearest major city where prices have gone way up are a) moving to cheaper areas and b) investing in cheaper areas.

That could increase your filing time. 

Jacksonville: 1.9 percent increase, from 1.5 million to 1.6 million." 

I feel like the market is at the peak right now with prices increasing everyday, but I'm keeping an eye out and learning all that I can about real estate investing and house-hacking before I return.

Option A: Leave rents the same...Option B: Split the rent increase with them...Option C: Or pass the full rent increase along to all of them? 

The homes are considerably older and many of them are needing flipping.  

Is there room to increase rents?

The law has kept those property taxes artificially low, regardless of how much their true real estate value increased over the past 10 years.