Welcome Crazy Matt,
The partner and I made our first visit to Phuket in September 05. There were some overcast and wet times but it didn't detract from the experience. There were enough sunny days for the beach and pool.
I can't help you with the accomodation in the hills but if you use the search function on the forum you may find some usefull stuff to help you.
Perhaps some of the Expats and/or frequent visitors could point you in the right direction.
Good luck.
