Ill spare you the gory details of the full list because I went whole hog on this set up, its not particularly stable, but for the lewd experience I described above, you thankfully don't need much; head over to lovers lab and the nexus and grab these.
Latest version of Lovers Animated Penis Framework(LAPF, formerly lovers with PK)
Latest version of Lovers Slave Trade
Body mod of your choice, I recommend good old HGEC with high rez textures
Oblivion Character Overhaul V2.
That last one is a big deal since it singularly unfucks all the npc faces in the game by modifiying the races themselves, so its automatically compatible with any mod that uses the default races as well. Theres almost no point to a lewd playthough without it. Also give J17's OCO and Hair Conversions or Lore Friendly Hair Replacer a try to fix up the fucked up vanilla NPC hairs.
Just a little tip as well, take a moment to configure Slave Trade when you start, and set the "making a copy" value to true, this lets the enslave script make a full processing copy of generic npcs you cast it on, which stops them from acting buggy and fucking with other spawns based on that same generic template, took me a while to figure that one out, but its important if you wanna put some snotty bandit bitch in her place. Or build a harem of them(pic related). That stuff alone are enough for a damn fun time and to do everything I described in the greentext but here's some additional recommendations if you're partial.
<other lewd stuff
Lovers Adult Play Plus(consensual sex initiated through dialog, takes NPC disposition into account)
Golden Perch(adds that tavern I was talking about)
Francescos Overhaul(This one adds in a lot of new Post too long. Click here to view the full text.