Making the move to multi-family/commercial space

[Mashel Mughal-Sultan]

Hello fellow investors! 
I am a long time worker and a first time poster. I have been dabbling in passive real estate investment for the last 10 years. Basically we bought a foreclosed property and Rehabbed it and currently runs as an Airbnb. During this time, we also purchased a commercial property cash and rehabbed it. it is now a freestanding commercial space that is rented out. The house is worth about 350k (no mortgages) and the commercial property about 250k (no mortgages) 

I would like to leverage these properties into making the next leap into multifamily and flex space properties. I have no experience in either, but I do feel like I have enough experience in building and permits, etc. I do have a full-time job so working for a broker/builder etc. is not the solution for me. My question is how do I make this next week? Do I buy a large multi family property or do I stick with what I know and continue investing in smaller, multi families and smaller commercial spaces. I am also interested in flex spaces and storage facilities. I guess I just wanted to pick your brains and your experiences in this field. where do I start? 

Thank you for taking the time to read my post