I think it all depends on what you are looking to do with the social media / how you want it to help you.

Now, some of these answers will depend on what state that property is in, how much equity you have, and a couple of other factors...but you can certainly seek out other lenders about a Line of Credit on an investment property.  

They have every incentive to make sure construction is up to standard since they will receive 5-6% (to be split with buyer's agent depending on state) of the sale price in commission.

Because of all of this depending on your investment goals, one may make more sense than the other. 

My initial instinct is to wait for the results of these two efforts, as your asset protection efforts seem to depend on them.

Discount depends on model but the discount is about 50% off of retail,  and arrives within a week direct from manufacturer. 

It depends upon what your current rate is, how much equity you have in the property, does your current financing have a prepay, and what your plan is for deploying any cash out.

It depends how much income you are getting in a year to determine the max loan you can get from a lender.

@Eric Telese It depends on the property and what the referee requires.

It depends on the guy you get, but typically not a big deal.