It is common for investors to bring in additional signers, often referred to as credit enhancement.

In addition, they connected me to the preferred lenders who also helped with closing on the property within a short period time.

And how much is your debt service, around $6,500? 

Does not affect your debt to income for future loans in the mortgage industry (auto loans could look different, but i would think similar so hopefully no worries there). 

The technicals (migration rates, job growth, tax situation, debt cost, etc) to work as well.

Eliminate debt, establish a budget, and save.

so, you're maxing out debt service which makes it tougher to cash flow.with that said, no matter the purchase strategy, you should always make sure you're using actual numbers, and not random assumptions.for example - some people will throw out '10% for capex.' 

Additionally, I wanted to begin using properties to pull equity to go towards buying more.

It's the concept of buying the debt attached to the mortgage rather than buying the house. 

Do DSCR loans qualify if purchasing through 1031 w/debt-carry-forward requirements?