Looks like things are coming together for the east coast winter circuit -- some dates are set and confirmed with organizers, and mast up storage is available at the US Sailing Center in Coconut Grove.
Regatta 1: Feb. 11-12, 2012 (no NOR yet or regatta name, but both are coming)
Regatta 2: Mar. 7-10 Bacardi Cup -- online registration open at http://www.yachtscoring.com/emenu.cfm?eID=569 -- if you think you're coming, sign up -- you can always forgo paying the entry fee for now as you nail down the details. 2 Vipers already signed up.
Regatta 3 (probably happening, needs to be confirmed) Mar. 23-25 by Key Biscayne YC (not part of Coral Reef Cup in 2012 since Etchells Nationals is there)
Regatta 4: Apr. 19-23 Charleston Race Week. Event website at http://www.charlestonraceweek.com/ -- though online registration is not yet open.
There are some boat delivery options from the northeast -- I'm getting a quote from at least one shipper who can do 4 Vipers on the back of a flatbed truck, which could have a lot of appeal if the cost is right.