I don't see any details about that conveyor dryer (tunnel), you know as far as if there are temp and belt speed controls. But, in general, you want a dryer that your print will fit into to fully cure (you can always turn a large print sideways through the dryer) but it helps so much to be able to control the temp and belt speed. As far as the length, sure the shorter dryers are fine, slower production, but, I have a 5ft dryer and I'm a one woman shop. It works fine for me. I typically do multi color work, so I can pace with the dryer.