Did somebody call? Anyway, here's a trip report I did a few years ago that might be helpful, particularly as it's from about the right time of year:
http://www.birdforum.net/showthread.php?t=30905
There should still be a lot of geese around in the second week of April, particularly in the Gruinart, Loch Gorm and Sorn Valley areas. Look through them for Canadas. Lots of seaduck and divers on Loch Indaal - just drive around and stop and scan. Choughs are pretty easy at Ardnave, Machir Bay and many other sites in the Rhinns. Most of the raptors should be fairly easy to see. Golden Eagles can be found on the Oa, parts of the Rhinns and along the road towards Storakaig south of Ballygrant. There are potentially plenty of other things to, so if you have specific requests then let me know.
Hope you enjoy your trip Dave.