If the value has not gone up a lot since purchase, this might not apply to you, but one thing that is often a factor when converting a primary to a rental is losing your section 121 capital gains tax exclusion (up to $250k individual, $500k married couple if you've lived in the property for 2 of the last 5 years).

I'm sure I will not provide the proper information for you all to give me the right advice but this is what I've got:I'm a somewhat recently married 36-year-old dude.

She will be paying rent anyways with me so her paying me rent and building our future wealth when we do get married is a much bigger win than us both paying down someone else's mortgage. 

Since you are likely married filing jointy, you can simply use your EIN from your LLC, which is a passthrough onto your taxes anyways.

Married, both W2 earners at 225k combined.

The standard deduction is currently 14,600, or 29,200 if married filing jointly. 

Quote from @Trystan Clark: Hi everyone, I am getting married later this month, and my wife-to-be and I live and work in the Bay Area.

Parent A and parent B are married and paid the mortgage in full.

(up to $250,000 for individuals or $500,000 for married couples filing jointly) Consult your CPA :)

If you are married with kids like I was when I first started, it might not work out.