I paid for my original Varg as soon as they allowed me to, and received it about two months later. Way earlier than most people in my state. I feel that the payment pushed me ahead in the priority line, who knows what exactly happened behind the scenes.
I ordered an EX a week ago and I believe it has a mid-March expected delivery date. I paid for it in full in advance, as don't feel there is any chance of Stark taking my money and going out of business before they deliver the bike.
To each their own, if you don't trust Stark, wait for the EX to hit volume production and purchase from a dealer. If you trust Stark and want the EX earlier, pay them in advance.