I'm interested in knowing how an overseas designer would handle the contracts and shipping of the decks should their design become funded. Is there any well known forwarding services which will be able to take care of the shipping process and can the contracts be signed electronically?
Or is kickstarter really a viable option to those living in the US.
You should check the rules again. There's a deck on Kickstarter right now by a UK designer, and it's posted in pounds sterling in stead of dollars. Your country might be viable as well.
If it isn't, you'd have to find a US or UK partner for your deck - someone willing to do the work and represent you. You could arrange for the decks to be sent to you so you do the heavy lifting after printing, or your partner (if willing) could do it, or you could try finding an order fulfillment service. Whichever way you pick, it involves taking a smaller cut of any possible profit. If you do the heavy work of fulfilling orders, you also have to factor in the HUGE shipping expenses you'll be dealing with.
It's not the kind of thing you can go into without knowing every single detail, every single cost.