Don't judge me to much this is my first foray into autocross. The event was a "Come Try Autocross" day, for charity. I did six runs overall and was pleasantly surprised with how my car handled. I had about 8 clicks left on my shocks and will play with that more next time. All in all it was a very fun day. I'm considering getting another set of stiffer TB but I am still undecided. I think i'll just drive it for a while and see what happens.
Looks fine from the video. Work on the driving skills and only make minor changes, if any, to setup. Its only realistic to focus on one thing at a time. So if there is something you really can't work around, then experiment with mechanical adjustments. But in my experience, driving is hard to improve when messing with mechanicals.
Some basic mechanicals are pretty easy to ballpark. Mark each tire with shoe polish to see how much tread - or sidewall is being worked. Then adjust tire pressure and/or alighnment as needed. Even there - sometimes a change in driving can reduce the amount the front tire may be rolling onto the sidewall.