Congrats! I think that as you ride more, you'll naturally cut down the amount of stuff that you carry (at least that has been my experience, some other guys on the commuting forum carry a ton, so that may not be your experience). The tools will probably thin out after a while, as you determine which you need & which ones you can get by without. The laptop is tougher. If it's work issued & you need to carry it, you are stuck, but you still might be abel to get by without carrying any of the accessories (power cord, etc). If you just need access to your docs & stuff, a zip drive or online storage site might make the laptop expendable.

Definitely enjoy the ride! I think that is my favorite part of my commute, is just the enjoyment I get out of it. I don't think that I really save any money versus driving, but the exercise is great, but it's just the enjoyment that I get of being on the bike twice a day that makes it all worthwhile.