I am really interested in building a Fender amp. I like the hot rod deluxes and the deluxe reverbs. What models are those. I think they are the 5e3 series. Is that right? Or, what do people mean when they refer to 5e3? I have been looking at parts and kits. Why are kits so expensive? I was planning on building my own cab, and I have a speaker that I want to use with it. How hard is it to work with tubes? Any other tips? Thanks. Sorry to be ignorant and ask stupid questions.