Speculative given the fact that the length of a possible spike after the FOMC rate decision is highly unpredictable...!
Even more speculative (a gamble really...) would be a long at market now until after the rate announcement, no SL and no TP..., only if your account allows it and risk is controlled, even in case it goes several 100 pips against you! Otherwise it could end up as a possible account breaker... ;-)