It may take a couple of tries to find the right shop but there are plenty in your area that'll have the parts needed. Might ask for best shop for old parts in the NorCal subforum.

Oh, and that Amazon ad doesn't give specs for the clamp diameter of the stem, but probably 1" so will probably work with those bars but cannot guarantee from information provided.

High rise bars + adjustable stem? You really want to raise your bars MORE than 5" ??? That's a LOT. There are bars with higher rise if you don't wanna mess with buying stem and bars.

Wald has 6", 10" and 13" rise options, but they have swept grip areas, dunno if that's OK with you.