As I tried to make clear in my previous reply, I think you should omit C3. Otherwise, every time you turn on the P-channel mosfet, there will be a large surge of current through the mosfet as C1 charges. If you do decide to keep C3, then you can omit C1 but I think you should also deliberately slow down the turn-on speed of the P-channel mosfet by connecting a capacitor of about 10nF in parallel with R2.
You will need to make sure that the 2 input signals to the 9986 are low before you turn off the P-channel mosfet, and remain low until after you have turned it on.