Before you solder in the flavor pot RV1 you might want to try other values like B20K, B50K or maybe even a B100K if you have one. Those values give you a much bigger range to work with. It also depends a lot on what your intentions are with the module. if you also plan to use it as a tom sometimes you absolutely want to go with the bigger pots. I originally had everything on the breadboard with a B1K working but felt like the range wasn't large enough on the finished pcb. You can simply stick the other values in and quickly try out the module without soldering the pot in. It should give you an idea how much range you'll have in your finished module.