I have all the options that you listed (and like them). A few others to consider:
- Bracket for second alternator (depending on your electrical needs/plans)
- Swivel seats or air suspension seats
- Two-stage sliding door
- Sliding door window and rear door windows (other windows added by SMB)
- Work with SMB to specify correct suspension options for expected weight
- HID headlights
- Side air bags
- Alarm system
Poke around more on the
http://www.mbsprinterusa.com/build-and-equip/cargo-van
website. I think you'll find a lot of details buried in the various pages.
Regards,
Alan