Did you search "suspension overhaul"? I'm sure Mango did a thread on that and that there are many other threads on it.
you didn't say control arm bushings, but assume you know that.
You don't 'need' a new sway bar...depending on your mileage, you may not need springs either.
Sway bar endlinks, though, could be done...don't know that you'd feel much difference unless yours are bad.
As desperate as this sounds, in comedy, 'likes' and 'views,' 'friends,' and 'retweets' really help. If I've ever helped you, please help me by friending, liking, viewing, and retweeting. It makes others think I have a following...it'll take you a minute or less. If you could, I'd really appreciate it!
A recent set--NSFW audio: https://youtu.be/_dcxcZfD6dg
Mangofy your E46!