I do think you're going to run into issues only printing once or twice a week though. You WILL have to get your hands dirty at some point in the first year or two if that's all you're pumping through it...
Yeah, I know the pitfalls of it, we have a CJV30-130 which is used once or twice a week.. if we keep on top of cleans etc it behaves. Also got a CJV30-100 which is used a lot and we tend to run into the same issues across both machines just as frequently really.
We have an 8 colour Canon with the light grey/light cyan/light magenta etc, which we use purely for photographic imagery. This proposed new machine is going to be purely for short run smaller "less colour critical" decals and the likes
Really, if we could get something small enough to print vinyl at A4 I'd be over the moon. Shame nothing much exists at this scale.