Even if they give the landing page a few moments, if WE MAKE IT HARD for them to engage with the page, they will EASILY give up and leave.So, how can we make their experience seamless?

It might be a little expensive at 15 units, but will easily scale. 

We rented out home in Vegas as fully furnished. and where shocked to see rents at double or more standard rent.. furnishing nice but not over the top.. been very good on that end plus with rents that high the quality of the tennants is very good.. can easily self manage..

Because later, you can easily use it as your mailing list!

Again, there is a value that should possibly be compensated if their names are not going on the mortgage but they are splitting ownership and other benefits (IMHO).There are probably a number of other easily overlooked items to consider.  

im interested in starting new construction could be a win win situation how much do you need

I would like to be able to occupy the property for 1 week every 4-6 months, which they agree to (with enough notice on dates) as they have to travel for work at times and could easily vacate during these periods.Has anyone written this sort of agreement into a lease?

You have to know more than your competition to win and find the best deals.

The rest is luck: did it rain that weekend and did we have the right buyers walk through the door, to push the winning offer just the last bit.. you can't control that. 

The tradeoff on the joint financing is going to be the (refi) costs associated w any transfer of ownership, HOWEVER transferring title to the LLC is unlikely to trigger due on sale (b/c it sounds like most banks simply aren't monitoring and/or enforcing due on sale in these instances) which would make the ownership (sans the actual mortgage note) more easily transferable than exiting your position as an individual owner?