You're close enough to the ACA factory, buying from them and just picking them up is probably the best bet. Aircraft Spruce, Univair or WagAero might have what you need too but then you'd have to pay shipping. Milman offers a leading edge upgrade kit for Citabrias and Champs but you'd have to also do the aluminum spars to install the leading edges.
Congrats on your first post and a belated welcome Steve! Any chance we can prod you to post some pics of what you're working on?