How to set up title and mortgage for a partnership?

[Ryan Pearson]

My wife and I are partnering with another couple to build a rental portfolio. When buying rental properties in a partnership what is the best way to setup the title and mortgage? Is it possible to put all 4 names on title and then designate one couple for each mortgage, alternating with each property? We don't have an LLC setup yet. We're planning to refinance everything into a commercial loan, under an LLC, after we build our portfolio up to around 10 properties. I'd love to hear what works best from other partnerships out there. I appreciate any help or suggestions.