we have cjv150-160 with OEM bulk inks
1. Yes
2. Subjectively, 120 sqft p/hr on adhesives, maybe 160 on banner. But ours is setup in 8 color (CMYK LC LM LK OR). If you went with double CMYK (4 color) you would be about 30% faster
3. very limited, but just fine & very easy for for that you described