For the soffit run, which if I'm reading right (and I'm still groggy, so that's no guarantee) is going to be around 60 linear feet of lighting. Using the strips I went with as a guide (Supernight 24v RGB 10m reels), they hit at 144 watts per 10 meters. You'd be looking just shy of 20 meters, so assume 288 watt load. I'd suggest a power supply with enough overhead to prevent the fan from coming on, or find a really quiet supply (can get pricey). Fanless at that power would get pretty hot, I'd be wary of having that in a soffit. With that approach, you'd have 2 10 meter strips that would both connect to the power supply and contoller, meaning each run is only 10 meters, so you shouldn't see any light drops. I'd suggest a 350 watt supply. I went with this 360 watt model https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
which works well. Unless I crank the lights (my normal programmed level is about 15% bright), the fan never comes on.
The columns are a bit trickier as your total light distance is getting up there. I'm not sure you'd be able to use the same controller that would be running the soffit lights or need a second one. Using a second Fibaro, you could power it with a small supply, run 18 or 22 gauge wire to the columns and put in-line amplifiers to power each column. The challenge there is getting juice to all 7 columns from two outlets, or running a lot of romex around the soffit. Still, that approach would give you a single controller for all 7 columns. Alternatively, you could get a beefy power supply, and run a single thicker gauge power wire around the room. In other words, one small power supply to power the Fibaro and send the control signals around the room, then a second heavy duty supply to send a 24v wire around the room to each column. Then at the column head, you attach the control wires from the Fibaro and the Power wire from the big source. I'll have to defer to others on here to the code/safety aspects of that. You'd use something like this to run the control signals: https://www.amazon.com/accexpert%C2%...s=rgb+led+wire
then a higher gauge from the big supply. Since it's only one wire, just buy a reel of whatever gauge you want to go with.