Hello! I have just gone through the same decisions last week.....I got a little over excited and just got on the train, made the 65 mile trip down, then drove him back on the M1 about an hour later!! I am 25, a girl, and know nothing about cars and fixing them.....it was a leap of faith but he didn't let me down. It was the best fun, thought the lorries might run me over but after a while I plucked up the courage and overtook them, and WE MADE IT!! I arranged breakdown cover with my insurance, with hire car cover too just in case.
My advice, just do it. Its the best feeling!!
Enjoy