I think what you'll find is that there are many mods that provide some of what you want, but none have everything you want.
The closest thing to vampire clan quests is Nekhanimal's mod, it has a couple clans and minor quests you can do. LTD's has some quests, but it's not really a clan, and to find them you have track down the vampire that turned you. StarX's adds a couple clans, but the only quest is to join them. You do get access to a nice collection of vampire armor though. StarX isn't a vampire overhaul, so it's generally compatible with the other vampire mods.
I like LTD's approach to vampire weakness in that by default there is no sun damage, but it hurts your attributes a bit, I think it's around -15 for most of them. Makes some unique gameplay in that if you go adventuring during the day, you'll come out of the cave encumbered because you lose strength as you go out into the light. So you either drop some stuff, or wait in the cave until nightfall.
Otherwise, most of the mods do have sun damage, but I've found that it's not too hard to make changes in the construction set to how you want them to be. Just add a fire weakness or increase the fire weakness to where you think it's appropriate. I"m not sure, but I believe that silver weapons ignore normal weapon resistance, so just give yourself resistance, and you have a weakness, or at least a non strength against silver. You can also delete the sun damage if you don't want it.
I've never used a werewolf mod, so I dunno.