If this does not happen you will still have two properties getting paid off and providing tax benefits and cash flow and hopefully appreciation.

I benefitted from rent inflation, but I also did some things that would help improve net cash flow (appealing property taxes, for example).Happy to send you some resources with more details on how I accomplished it.

Since I will be refinancing with a DSCR loan, is there any benefit to transferring the title to my llc now that I’m moved out and not stuck with the FHA requirements? 

An additional benefit of a detailed engineering-based Cost Segregation Study is that it can increase potential insurance premium savings as well as provide support for the property tax appeals process.

Thus I do not see what benefit there is investing as a LP with a LLC

Not many people want to believe in holding onto something for a long time and seeing the benefit of it only 10-15 maybe 20 years down the line.

We would only plan to manage our own properties.Would there be any tax advantages, or any other benefits, to starting our own property management company?

if you aren't will to or don't want to go into those types of areas, but by all means the FHA or 5% down conventional 2-4 unit loan is gonna be the way to go in my opinion.We did a house hack as our first move into reale state investing and it was the best thing we ever did and continues to expand ints benefits to us every year, So I am a huge fan of the strategy. 

@Nathan Gesner what is the benefit of the double deposit rather than collecting last month's rent + a single deposit? 

You can have for example a 6 months contract, extendable, as you are not covered by long-term rental rules (neither "benefits").