Are you saying no front sway bar right now, or just the stock one?
Honestly, even without, you'll still have fun at the MATS autocross. But if your going to take a school (I added Evo School link above), you'll get more out of it with a front sway bar. Do not add a rear sway bar until you've added a front sway bar, specifically a large aftermarket front bar.
Shocks. Nowadays there's a lot more options. Just run what you have until you're ready to buy (unless they are not working or making you unhappy). Just don't waste your money on KYBs - especially on a street cruiser. Not enough high frequency damping. Although on a full rubber suspension maybe it wont be so noticible.
Oh. There is one possible issue. The typical power steering pumps can't keep up. I dont know the details as I use a manual box. Steve Wall can fill you in on that if it doesnt show up in a search.
One more. I like to run a fairly full fuel tank. Keeps weight from sloshing around and puts weight where its needed.
