Could/Should the 2 LLC's be tenants in common for the new property purchase?

I've never done a partnership, but these are common issues that I don't often see addressed in contracts found online. 

Software is a common question on BiggerPockets.

Even if one partner takes a more active role, both should understand the motivations and risks associated with investing.It's common for couples to struggle if they're not aligned on investment goals.

You might see soft spots on the floors—they’re one of the most common mobile home faults.

For your first question about doing a "subject to" on a hard money loan, it’s possible, but it’s not as common since hard money lenders typically have stricter terms and might not allow a loan to be assumed like a traditional mortgage. 

Things I would like to include are cameras in common areas, Inspection, Cleaning, Noise, Parking, Personal Spaces like fridge and cabinets space, bi-weekly rent collection.Please reply if your near Charlotte, NC for a free lunch. 

It’s very common in my area to have roommates so that could be an option to maximize income from both units.

In a former life this was fairly common but I would have it paid to escrow and then credited off my origination fee, if that makes sense.

Some lenders may still offer 10% down, but they might require strong compensating factors such as excellent credit, higher reserves, or a low debt-to-income (DTI) ratio.The requirement for 12 months of reserves is common with jumbo loans right now, especially in Southern California, where property values are high.2.