"You can exceed the 1/7/hr. for short periods but unless you're hiking your cylinders up a 300 ft. incline, get some bigger cylinders. The refills on the small cylinders will cost you a fortune!!! A 75 cu. ft. acetylene and a 122 oxygen would be a good size and are still fairly easy to move around. "
Actually, this small kit is perfect for my needs - which is what led me to choose it in the first place. It came with a cutting head which I have used several times and it works fine. I was simply looking at adding a larger nozzel for a small job and didn't stop to think about the limitations of the 10CF fuel cylinder delivery rate. It's no biggie - I will use something else.
The larger bottles would be a bit large for my needs. I don't think I would be able to toss them in my car trunk for transport.
It only costs me $21.50 to refill the Acetylene bottle, $11.30 for the Oxygen and it lasts me almost a year.
I appreciate everyone's feedback.