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Do you really think there is a chance that bullet proofs aren't already priced in?
It is possible but if 2015 and the LMDB was any indication I think not. Many may remember that before LMDB the entire Monero blockchain had to be stored in RAM. LMDB for Monero was available on the main chain during part of 2015 but not as an "official" release. It only became "official" on New Years eve 2015. The result was a spectacular bull run in XMR/XBT during 2016, where the price of XMR in terms of XBT rose by over 26 times.
Edit 1: Unlike LMDB during part of 2015, Bulletproofs are not available on the Monero main chain.
Edit 2: I consider the downside risk of being short Monero when bulletproofs go live to be very high.