Planning a week+ family trip to KK in early Dec school holiday

Haven't to KK for many years, previously are just short business trip, this time family gonna tag along, 2A+2K

So gonna rent a car, probably throughout the whole 1 week, either Saga or Bezza
Stay in KK will be using Airbnb

Kundasang should stay one night there right? not recommend for day trip from KK?

Also planning to try out white water rafting there, seems got 2 choices, Padas River (class III-IV rapid) or the milder class I-II rapid Kiulu river, much cheaper as well if self drive there. Anyone tried either one of those, how's it compared to the Ayung river in Bali?

Also planning for island hopping + snorkeling while in KK, most info just pointing to go Jesselton Pier to look for package, and buy from there, anyone got additional info to share? I need to estimate some budget for that

And seafood! colleague brought me to a local seafood restaurant, which is pretty cheap and yummy compared to those tourist slaughterhouse in city center, problem is that colleague is no longer around, and I can't remember where the place is! :x
I only vividly remember it's either somewhere in Damai, or somewhere near the 2nd roundabout after you use the coastal road to floating mosque. I remember it's an open space, not shoplot, not nearing any seaside, it has a colorful neon arch, dunno the name, as I go there makan only

Guess will stay a night or 2 at Kundasang, any other attraction around beside the dairy farm that's suitable for older kids?
upside down house & hotspring no need go, as Kuching also got already
Weekend or weekday for Kundasang? any weekend market/events there like Cameron?


for the seafood restaurant, guess it should be close shop liao, search streetview whole day on the route I remember also cannot find anything that looks familiar :x