Thanks for all the advice guys. Just to update:
I hit a Training PR in the C&J a bit over a week before the comp (195 lbs / ~88 kg). So my last week I went up to 145/185 (~66/84) for singles, and a 225 (~102) FS single (felt easy) on Tuesday and Thursday, just squats up to 100 kg on Monday, Wednesday, and took Friday off.
At the competition I fucked up the timing on my snatch warm-ups, ended up doing my last one (60 kg) as they called my name. Then had to get rid of my T-shirt and sweatpants, pull up my straps on my singlet and run to the platform and missed my easy 65 kg opener. There were 2 other lifters at 65, so I went and took another warm-up at 62, got it, and took my second at 67, which was easy (just went fast, ended up being a power snatch). Looking back, I should have checked the board, and called for 66 to give myself time. Third attempt was 75, got red-lighted (Felt pretty good, I got down fast, felt comfortable in the bottom, which is usually my biggest problem, just didn't lock my elbows, and had to press-out), pretty disappointed, would have been a 5kg PR and my first BW snatch, but looking at how I started, I'm glad I didn't bomb out.
C & J went much more smoothly. I found a guy that was starting 5 kg below me, and warmed up with him. Hit all 3 attempts including 92, which was a ~4 kg PR.
Definitely going to start lifting with a club, probably in the fall to get ready for the same competition next year. If I decide to compete again on my own before then, going to train someone to be my handler :), or try to convince a friend to lift with me. But all in all, it was a good experience, got to talk to a few people, just running around like an idiot at the beginning...