I am surprised there has been no mention of Segwit2X, this has a planned release for July 21st, and so if this gets acceptance, this will be the defacto bitcoin (imo this is the best compromise, larger blocks and segwit activation).  With my understanding, if this is successful before August 1st then 148 is moot, as it is already activated within Segwit2X.

Maybe someone with a better understanding can explain this better?...