Ordinarily, if faced with a choice between a credit spread and a calendar, I would generally opt for the credit spread due to the comparative ease of management.
In this particular case, I would look to have a VIX credit spread on with a breakeven point somewhere between 10 and 12.
Here's a setup that would do the trick for a December expiration:
Dec 16th VIX 11/13 put credit spread for 1.50
Max Profit: $150/contract
As with the calendar spread, I'm putting this on as a GTC order to fill at the point at which I can get 1.50 for the spread. Naturally, I regard this as unlikely between now about 25 days out from the December expiry (at which time I'll take it off and move to January), especially with this uptick in we had at the end of last week, but stranger stuff has happened ... .