1) Lowering Springs- Vogtland & Eibach should give you some drop and OEM quality ride depending on strut. Lot of choices on springs tho.
2) Bilstein Shocks- Sorry I had them and I remove them.. Too harsh.. if you need firm strut go Koni.. Most of the M5board.com guys swears by Koni's..
3) 18" Rims and some great tires- I have 18"

18x8.5 and 18x10 for that matter.
4) Thicker (Stiffer anti-sway bars for front and rear)- Good to have. but I've always found Strut have much more return on handling than sways.. . With the way the E34 sway bar links are.. It makes very little differences.
Just my opinions of course.
18" is not ghetto- its Just right.
