Disclaimer: I'm not a helicopter pilot, but I have explored that area both in light and microlight aeroplanes which probably had similarish performance to a small helicopter.
Firstly, fuel is everything in that neck of the woods - make sure you know where fuel is REALLY there, and plan around that. Don't just rely upon Pooleys - phone and check.
Secondly, two obvious really nice trips from there...
(1) Straightish line from Connel/Glenforsa over to Broadford, then take a look at Skye Bridge and Eilian Donan Castle, then land at Plockton - lovely little village with a semi-tropical micro climate and quite a few places for lunch.
(2) South side of Mull / Colonsay / Jura /
Corryvreckan,
Staffa...
Have fun, I envy you - I think that I'm off to the Isle of Wight this weekend, rather less glamorous!
G