I have an uncle that wants to build me a custom trailer. I will be pulling it with my 02 f150 4.6L. I am only hauling a 32z, 2 21 and accessories. I was thinking around an 6x10. My biggest problem is that I drive about 900 miles a week and I want to try and save a little on gas. Should I got with a bigger trailer or just go with this size? Also, what are some options I shoulf have him add. Should I go double or single axel?