Can 1031 Proceeds be used to fund a lease option or a fractional ownership?

[Sandy Blanton]

We have 1031 proceeds in escrow. We have a property located, but the proceeds aren't enough to cover more than 1/2 the cost of the property. The seller has expressed interest in being creative by us giving our proceeds as a lease option towards the property. OR buying 50% of the property and remaining partners until we have funding to buy out his half. I'm quite sure the fractional ownership is okay, but is the lease option idea feasible while accomplishing tax deferral of the capital gains. Thanks for your input. Steven Hamilton II