I'm glad your project was a success. I'm not sure what you meant about perverson of A/C parts though. You had some questions about tubes and we simply tried to help you get a better feel of what they are. Hopefuly you have and can take that idea and expand it, make it bigger, let it grow and touch you deep inside. I think it's good that you put forth the effort you do for your clients. You had questions and turned to the experts in that feild. You also have gained information on tubes and other things which may be useful if tubes come up with fucture clients.
To your other question I personaly enjoy walleye fishing, college hockey, camping, reading(Anything HVAC related and rescently Harry Potter), golf, sailing with the captain , shooting the shet with my beer drinking buddies and helping young ladies with tubes. Which reminds me...
Width is more important but length is also a factor as they both affect the flow rate, friction loss, and surface area. Technique and experience are important to, especially when puting them in. I figure if your going to erect a structure you might as well do it right.