Some thoughts for you....Just got back from Bonaire.
Take your gear - you want to get familiar with it. Didn't need scissors or safety sausage. Do need light and should have a knife if you dive Hilma Hooker (deeper than 60' but you may change your mind about that). I'm with everyone else on the camera issue, having been an U/W photog for 30 years. Having said that, diving Buddy's Reef and the boat dives would be a great time to have the camera and are VERY easy dives.
We were there for 7 dive days and did 16 dives, I would suggest that you dump the boat dives and do shore diving. That is the best way to improve your diving skills. You plan your multilevel dive, do your own navigation, plan your entry and exit. Most tropical locations, you don't get to do that.
Didn't take much clothes, didn't need 'em. Swimsuit and wetsuit all day shore diving and then relaxing by the pool when we got back. Only bring clothes if you want to go to fancy restaurants in the evenings. As for luggage, we took a pelican case with U/W photo gear, dive bag with 2 sets of gear and 2 small bags for clothes. American Air checks 2 bags, no charge, Divi Divi from Curacao is 44# per person, cost us an extra $28 for overweight - way, way less than renting dive gear.
I use a full suit and my husband uses a shorty. He got cold on night dives. Buddy only rents shorty suits or he would have rented one. You won't get hot in a full suit. There was always a breeze.
Other issues-
This forum had me worried about mosquitos and it wasn't a problem. I brought a citronella candle for our deck and evenings was the only time that we saw mosquitos. Didn't use the (3) containers of bug spray that I brought.
I LOVED having a sun shower for after beach dives, rinsed me and my camera off and all was good with my world. We also brought a soft collapsible cooler (Boys and Girls Club logo to deter theft)! We packed our lunch in it every day.
Followed instructions about leaving items in the truck. We hid our nice sunglasses, etc in the bushes/under rocks and just left flip flops, cooler, towels, sunshower in/on the truck.
3rd day, as we were arriving at "The Lake" a large group had just been hit by thieves. Every truck with anything in it was hit - sunglasses, clothing, cooler, batteries, memory card. This may have been a unique circumstance in that they had so many vehicles that no one else could park at that site, every other site that we dove had trucks coming and going the whole time.
Have a great time, sooo jealous and can't wait to go back.
Donna