Welcome aboard USCmule;
I'll join the chorus for the Allen. Mine is also a 5/7 and is about all you will need for Trout fishing. Should do well on the Echo Carbon, a good rod.
If you need a line suggest you ask Justin about his at the same time. Think he will put backing on for you too. You will have to tell him which hand you
crank ( wind the reel ) with. Good luck, this is a great sport