From the All Electronics website, caps listed as: "disc", "metallized polypropylene", or "mylar" will work fine.
Mylar will probably be smallest.
As far as the ferrite, the one you listed is rated for 3A DC as far as I can tell from the catalog page. I'd suggest Digi-Key 240-1013-1-ND on the same page. Rated at 6A and 80 Ohms at 100MHz, plus it's bigger and easier to work with.
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