1031 exchange dilemma, buying 2 properties with new partners

[Darius Moezinia]

I Just sold a property that I owned for 5 years for 400K and have 2 replacement properties identified.

Property A, I have been in escrow for the the last which had title problems and is nearly resolved (at purchase price of 600k) and property B which I am also in escrow for 300k and must close next week. I am planning to close escrow on "B" and refinance it to pull some money out to buy "A" ( and since I may be short in cash bring on a silent partner on board).

Eventually, I like to sell "B", and buy out my partner on"A", so would have "A" for myself.

is this doable? what are the pros and cons? Provided I follow all the timelines and hold property "A" as joint tenants with my partner?