Are you looking into single or MF properties?

At least one forum member has retired on just a few upper scale single family homes.

LLC probably won't care about your DTI if you go to the right lender, Conventional will account for your DTI and want to see tax returns etc. 

Many years later we scaled up to a high point of 50 deals in a single month.

a single family to a multifamily property is perfectly fine.Lastly to your question - You must purchase at least as much replacement investment real esate as you sold if you want to defer all tax.  

Around September 30th I started receiving questions and was informed that there was a problem since I didn’t have the amortization schedules for my for rental properties from my previous accountant.

I own a single family home and have tenants that have stayed for two years.

I currently own a single-family 3/2 in South Philly and the mortgage is about $1,900 a month.

Double and triple check your purchase price with your renovation and holding costs and try to hit a single rather than a homerun to start.

It can be really smart to get a good accountant that likes tax strategy and look at all investments in your life.