I am in the process of configuring a 2018 Boxster S. Trying to balance performance options and interior options. Love to hear feedback.
Agate Gray with leather in black/red with matching seat belts
PASM Sport (20mm)
Sport Crono and Exhaust System (chrome tail pipes)
20" 911 Turbo Wheels
LCA
Bose
Sports Seats (manual...am I crazy not to get power??????)
Entry & Drive
PDK
No special lighting or power seats (never seem to use multi options anyway)
Thoughts???
I have a 718 Cayman, so no 'S'. Nevertheless:
- PASM Sport is a MUST for you. But you're losing almost an inch of ground clearance with it (and, ergo, suspension travel), which means that bottoming out/scraping will be more of an issue. For that reason ...
- ... I would NOT combine that with the 20" wheels. Not only will the ride will be harsh on anything but smooth pavement, but you will bottom out more, and I would not trust 35-section tires to protect your rims from damage. That said, if you're dead set on 20s, the 911 Turbos are the ones to get since those are the only OEMs that are forged.
- Sport Chrono: Worth it with PDK (particularly combined with PASM), not as much with a manual.
- Entry & Drive: I didn't opt for it because passive keyless entry is a proven security risk. I rather like turning over the engine with a good old-fashioned insertable fob myself, but YMMV ...
- LCA in a sports car, IMHO, is totally unnecessary. The car already comes standard with park assist, which is what you really need visibility-wise. Again: just my opinion.
- Leather is a no-brainer to me because it's one of the few options that's a relative bargain -- and it's been reported that the leather interior panels are actually
lighter than their plastic counterparts. Do it for the stitching alone.

- JUST SAY NO to Bose. The base SPP is not bad at all (This is an opinion coming from an audiophile with a fairly deep understanding of sonics).
- Can't offer an opinion on the manual Sport Seats; I opted for the 14-way power ones. Love them. I've spent 10-plus hours in mine with nary an ache.