You can book from RJY to HWH Sleeper CK.
Currently MAS-HWH CK is at WL 58 and 66 Confirmed PT Berths are available.
Even though it would be tight but you can still give it a shot.
Else, to be on the better side book a CKWL 3AC Berth from RJY to HWH. Currently it is at CKWL 5 and 16 Confirmed PT Berths...
more... are available. So, this should confirm for sure.