Retirement plans for landlord with 1099 income

[Jennifer Knestrick]

I have been a w-2 employee until recently, investing in real estate on the side. I've left that work, and plan to self-manage apartment buildings I own, formalizing that as a 1099 employee of each LLC. All LLCs have partners.

What are my best options to contribute to retirement and maximize tax advantage, either near or long term. Age 42

Thanks!