hi Bill,
I don't know what case on your AT, but I've seen many ready built ATs with 11turns on the core... Perhaps also yours. So you can reuse the wires... You only? need 10 turns! that makes abt 1/2inch spare wire on each...?
For the input wire you just can use any bare wire. Must just fit to the soldering points and must not get contact to the secondary turns in any case. I prefer insulated wires or like described pieces of coax cable, with one side screen grounded!
73, Immo