I contacted Mundorf support a couple of years ago wih question about their different product lines, and general use. The tech that replied stated their general rule for bypass cap values are 1% of the larger caps value. 220uf bypassed by a 2.2uf, and so on. The size of the output caps limits the choice of caps you can install, no teflons, no Mundorf S/Os, and so forth.There is a good choice of affordable Metallized Poly. caps. though, from Dayton Audio, Solen, Mundorf, Axon true caps at 91uf, which folks that have used them state that 91uf was large enough. I replaced the last cap in the PS with a 220uf Mundorf Mkp, but that was darned expensive. Almost as much as the kit itself, not worth the expense I think. You can have a lot of fun rolling caps in the Crack! Hope this helps.
Cheers,
Shawn