There are a number of options to fly to Sorong. We looked at Bali, Jakarta and Manado. For us coming from Australia, jakarta was the better option as there were more services to Sorong and it avoided the need to stay overnight in Bali or Manado and possibly an overnight stay in Sorong. The package we got was unlimited diving which includes the house reef.
Thanks everyone for their response and experience. We have followed up both kri and Papua paradise resorts and have selected Papua as they were able to fit within our itinerary ( we depart on 24 May for 14 days). We would have been quite happy to stay with kri. The last two years we visited Alor and Weda and hopefully Raja will be as pleasant as these. I will update the forum on our return.