Waking up this thread as I plan some similar diving in June/July 2023. Komodo LOB followed by ~1wk Alor and then who knows but probably something around Bali.
Having just dove the Red Sea with a rental 5mm shorty I am 'sensitive' to the temps and want to make sure I get the right gear. The trip is a long way off but i may have to collect my gear soon as other travels will come into play. I was COLD on a couple sites where my computer registered 24C. I was OK in general where temps were 28C but I would have preferred to have my 5/3 full suit. I plan to take that and a 3mm vest and a hood on this trip. I tend to get chilly more than others (135lbs and not really any extra 'human' layering on my body). I am VERY curious about this 'heated vest' someone mentioned.
Also curious about the mosquitos in June in Alor. OP suggested they were out in force. I remember getting eaten alive my first trip to Lembeh. Would love to avoid that situation.
If you bring your full suit and a hood, I'm sure you'll be fine

- a hooded west will give you more protection. Rental suits might be old and worn and not a proper fit like your own suit. We dived and stayed with Alor Eco divers and they do not rent suits, you need to bring your own - other dive centers may have rentals.
I was told it's not normal to have so many mosquitos in Alor in July - usually they're gone by June, but due to unusual rain fall they were still there. Even with lot of soffel (local brand mosquito guard, that usually works good for me) I (and our son) got eaten most nights - we're the mozzie magnets of the family, husband and daughter got maybe 3-4 during the week. I bought a "pen" you press against the bite and press a button, it then warms/zaps the bite for like 5-10 seconds (hurts like h***), but then the itch is gone - very much worth it and totally recommend!! Still I'm dreaming of going back to Alor - the place was just magical for me/us.
Have fun planning and hope you have a great trip!