I've got a pretty loud pop when engaging the Florist. Would I increase the value of R1 (1M) to possibly get rid of this?
No, the value of R1 won't make a difference here. It's there to discharge capacitor C1 in case the previous pedal's output is offset from ground, and is supposed to help prevent pops. The 1Meg value is small enough to drain C1, but large enough to not kill your input signal. There are other causes of popping, here's a great article that should give you some ideas for troubleshooting: https://www.muzique.com/lab/pop.htm
ok, thanks. I'll look this over