While caulk many times is a band aid, the alternative is tearing the outside of that wall apart which is super expensive and probably not necessary...yet. 

Alternately use 70% expenses instead of 50.

This seems like a costly strategy, but since we are new to wholesaling, we are unaware of alternative solutions.

Is there any alternative I'm missing?

Alternatively, you can wrap them in the loan is the lender agrees and you have some acceptable charges.

That's why we are considering other alternatives to leverage the equity of that property.  

Another alternative, Fixed income RE funds, there are several out there but stick to the SEC registered funds that provide a guaranteed Annuities of 6 to 8%Your 401K could be rolled into a self directed IRA, and that would give you various investment options mentioned above.

If there is, or may soon be, a better alternative use of the money you have tied up in this property then you should sell and invest in that.

Your monthly payments are going to be higher with that little amount down, but if a good option for getting into a place if the alternative is waiting another year or two to buy.

. $84,000 in equity)I have my Hard Money setup for the cash offer at 1 point and 11%.My current thoughts were to present them with two offers1-$15,000 down and increase the purchase price by $3,000 while we pay their PITI payment monthly2-$84,000 (all equity) at the same purchase price as the cash offer and pay them monthly PITI with an extra $500We dont close till July 31st so I have a minute to come up with an alternate offer just trying to crunch numbers and see if it actually benefits me this time to seller finance the deal.