What do you think is a reasonable split to consider in this scenario? 

Buying another 30+ units (7 seperate properties all in PA) and I’m going to split them up into 3 additional LLCs but wanted to add an additional structure on top of those 4 and make the 3 new ones SMLLC owned by a Wyoming LP.  

To avoid going through the same poor experience, keep reading.Even if someone gives you a referral here, do NOT make the mistake of assuming that the PMC will meet your expectations, just because they met the expectations of the referral source.In our experience, the #1 mistake owners make when selecting a Property Management Company (PMC) is ASSUMING instead of CONFIRMING.It's often a case of not doing enough research, as they don't know what they don't know!

Also, what situation is the best thing for our taxes?  

I don't think the seller of the 6 plex will wait an indefinite amount of time for me. 

What proof If any can I request from the tenant to prove this?

Key takeaways include:- 81% of investors plan to grow their portfolios within two years.- Investors are less worried about vacancies, focusing on financing costs (35%) and home prices (33%).- 22% faced rental insurance hikes of 11% or more, and 50% saw property tax increases of over 6%.- Conventional loans remain the top financing option (44%).Give it a full read on our BiggerPockets Blog

Both have credit scores of less than 550 and less than 60 % on-time payments.

I'm curious about what others' experience has been like.I invested in a couple of crowdfunded syndications with them through the SmallChange platform in 2021.

To avoid going through the same poor experience, keep reading.Even if someone gives you a referral here, do NOT make the mistake of assuming that the PMC will meet your expectations, just because they met the expectations of the referral source.In our experience, the #1 mistake owners make when selecting a Property Management Company (PMC) is ASSUMING instead of CONFIRMING.It's often a case of not doing enough research, as they don't know what they don't know!