With current rates my mortgage would be about 4600$ and doing basic math i would have to pay about 1300$ to live in one unit.

I am looking for the best options to get a long term rate around 7%. 

I have roughly 50-70% equity in each property, each property has a 30/yr mortgage with interest rates that are pretty low (3-4%).

I have heard there are smaller lending groups where you can purchase a note of the loan for a private investor with fairly good return rates.

IMO this makes Texas the preferred choice for series LLC, although the (over rated) non publishing of organizational information in Wyoming and Nevada will have others disagree.  

I'm looking into a few different options now: HELOC on other investment properties (though I'm finding rates are 11%-13%), a business loan on another business I own, and negotiating with vendors to take deferred payments. 

However, with all the zoning, interest rates, and rising prices, I was wondering if it is still a good place to invest for cash flow.

This is EXACLTY what Clayton Morris did to his clients dumped them into low end properties and millions were lost.. this is something in my personal opinion that will never work and investors are going to sign on to these high interest rate private mortgages and find themselves in trouble. thing of it logically if you have the cheapest homes basically in the entire US what kind of renters are they going to attract..  

If they don't like it, you can find another tenant willing to pay market rate and pet fees.

I would keep your peak season pricing the same and look at improving the rest of the year by decreasing pricing some until your occupancy rate ticks up a little.