Hey asheby thanks a lot for this very helpful info!

So, if I'm allowed to enter with my AB Sapphire card the lounge on a Malaysian domestic flight (this I wasn't sure at all!) then I think I will choose MH instead of Air Asia, also given the fact that the transfer within KLIA will be much faster and more comfortable than from KLIA to KLIA2. And if I will be able to keep my liquids from Duty Free store from DOH until KBR, then anyway

Thanks again!