In reply to scon:
I hope you get a good day, anything with a sea view is always more special in my opinion.
I would advise an early start, I set off at 0500 and went via An Stac, great scrambling and no protection used. We beat all the guides there and were first up, but it was very busy afterwards.
If it helps, it was my first lead and I used 2 x 120 slings, but I felt they were honestly not needed as the first pitch is a breeze and is well protected, so you get most things in from the very lightest of racks.
Take a 240 for the belay and as others have said a mix of med nuts and cams. The second pitch is again straightforward, but much more narrow and exposed.
Rather than a slog back the same way, the ridge along to Banadaich is very enjoyable and never too exposed on the left and you'd make a nice circuit of the 2 munro's and the scramble of An Stac. Good luck old bean.