In your case, just grab some pedals. The FM9 is great but if you like to adjust things on the fly, it is not super convenient. You would want to have you PC Editor open.
On the upside, you can create setlists and with a click of a button or three, cover an entire song. There is however a fairly decent learning curve- and a 15 hour class you can sit through for $99.
It comes down to personal preference. If you have not even bought one and you are already having doubts, I would not suggest it...and especially since you said your tonal needs are pretty basic. I've gone both routes and currently built out a really nice board. I have a RC500 looper, a compressor, two delays, including the Boss DD500 which is nice, Immerse for wacky stuff and a Flint for Reverb/Tremolo...and a Boss OD pedal. I round it out with a superior Peterson StroboHD tuner. It's a really nice set-up. I can adjust on the fly easily and it sounds great. If one part fails, I can still play.
I am hoping Fractal will update the UI on their units so they are more like the new Fender Tone Master Pro (easy to adjust w/no PC needed for most things.) A FM6 would be an ideal form factor as well. If they make that, I will add it to my current set-up.