I must be a moron, I still don't know what is a 5e5a. Anyone? . . . . Bueller?
Speaker selection, what do you expect to play thru your amp? Guitar? What style? Bass? Harmonica? Trombone? What kind of tone are you after?
Give us a little more information, maybe we can help you. ALSO it's not necessary to post in different sections, those who can help will see your questions, and it will avoid confusion to stick to one spot.
In kits, avoid the black cardboard circuit board like the black plague, that's all for now.