John Scheepers carries some of the crocuses your looking for. It doesn't look like they carry lycoris, at least it's not coming up in a search of their site. I ordered from them several years ago. I'm interested in older 'heirloom' varieties of crocus and narcissus and IME they have a good selection.

Van Engelen would work, though I'd prefer to have 500 of the chrysanthus crocus (can do) and 100 tommies (can't do...unless I only get one bag of one kind of tommies). I'd have to make a choice which of the tommies to get..maybe just plain. All in all, it's a viable solution though.

If you're interested I'll see what I ended up planting. The chrysanthemum were showiest but the Tommies are supposed to naturalize better. The named Tommies seem to clump up more than the species which seem more likely to stay as individual bulbs but then seed around.

Mine were great the first year but the bunnies are relentless about mowing them down for spring brunch. I'm not sure what I'll get this year since the foliage was eaten soooo many times last season. Hopefully they still live.

I've chrysanthus at my parents which were planted 25 years ago (or more) and they've made a nice little patch in the lawn. The tommies at my place in Oklahoma spread nicely...so I'm sure they'll do well. I don't have rabbits, but do have tree rats...which may decimate bulbs.

I've been happy with John Scheepers and Van Englelen (same company, different quantities) and have also been quite happy with Brent and Becky's Bulbs. I know that they carry all of what you mentioned. I've gotten species crocus of various kinds from them and this year ordered Lycoris squamigera. The Lycoris they grow and dig from their own garden, so they are really fresh, but they usually sell out, so I don't know if they currently have them. I also am not sure if they have other varieties this year as most Lycoris isn't hardy for me, so I didn't check.