10 Days across New Britian and New Ireland

Hi,

I've been looking into a trip to PNG for some while now and have formulated the below plan of action. Does anyone know whether or not the below looks feasible? Is there any reworking you might suggest? In an ideal world I would fly into Rabul, climb Kombiu etc first, then take the boat from Kokopo to Namatanai and cycle from there too Kavieng but unfortunately the flight times mean this would only leave me 30 minutes between flights home (i.e. Kavieng to Port Moresby and then onto Singapore) and thereof.
All views greatly appreciated.

Flights from/back to Singapore are Thursday/Monday:

Thursday - fly evening to Ports Moresby, stay in airport for a few hours and fly to Kavieng
Friday - Arrive 10.30, hire bike, start cycle to Namatanai (self guided) (Sat, Sun, Mon, Tues)
Wed - travel back to Kavieng (will a PMV take me and the bike?)
Thrus, Friday - surf Kavieng
Sat - Fly to Rabul (am), climb Kombiu and Rabaul Nakaia (pm)
Sun - Day around Rabul
Monday - Fly back to Port Moresby and back to Singapore

I have also heard that the Malagan festival is worth a view if possible. Do you know when this would be held and where it would be best to be for it?

Thank you very much for your time,

All the best,

Matt