stay in the game".You have to understand what a loss is...and combining #1 and #2 above should help. 

I like 15% combined.

Or a combination of the HELOC and cash out refi?

The old wiring could be an issue as it indicates that the service may be substandard for modern living.

Assuming I did acquire this additional property personally and simply rented it out in the short term, what would be the best way to structure either a future sale or a combined development of both properties I would undertake myself in a few years?

Figure ~15% combined.

We purchased the home with a combination of a hard money, and then JV between my company and an investor partner I use for a lot of my deals to fund the purchase.

Right now, we have a combined income of about 200K and can save 3-4K a month.

American Modern- They are also a good choice.

First, if you felt insulted, I appologize.Second, if you look closely, My comment was not directed to you since I never mentioned you in it...My comment was in general, as in "you" = "anyone".Third, which is a combination of "first" and "second", comments made on these posts are not always directed to a specific person.