You will definitely need to have some skin in the game.... wholsesaling is not that easy.

The benefit of having a local property manager / partner is to have someone local with skin in the game, not just looking for a one-shot commission.  

A good sign of no insulation is lathe walls which are a rough texture wall unlike modern drywall.If the walls are not insulated you will have to look at the options and the cost involved to see if it will be cost effective.

Problem is people want "skin in the game" which if I had 30% or so...

I will require my JV partner to have SKIN IN THE GAME - or their own money on the line.

What kind of repairs can you expect when they have no skin in the game?  

Hard money lenders charge points and fees and they want you to have "skin in the game" (usually 20% of the project cost - in this case, you'll spend $10K as downpayment plus $2K-$3K in points and you reserve $5K as your holding or carrying costs = hence, you need $20,000 total).2. 

However, a few also choose to dip their toe in the water and experiment, so I feel that crowdfunding sites can still provide a good source of leads.Realtymogul focuses on nonaccredited investor offerings, which tend to be much higher fees, have almost no skin in the game, and much less choice and selection than accredited investor options.

We don’t have cash for downpayment but for the “skin in the game,” is it enough to use our credit for the repair and our own sweat?

In short, there are too many ways to skin this cat.