Sorry if this is too late, I've only just seen the thread.
Firstly, if on the A861 stop at
Simon MacDonald's smokehouse at Glenuig for prize winning produce - salmon, of course, but haggis, cheese, venison, duck, ostrich, alligator and more. Great food and a nice guy.
For the fishing there's
Kinlochmoidart Estate. I suspect you'll be a bit early for the river (edit: thought you were off there soon! Late summer? If there's water it could be worth a try!) but there's good trout lochs up in the hills. The closest is a good hour's walk uphill on a good path but on a clear days the views are stunning and the trout are said to reach 2 lbs+. Look for rocks studded with tiny amethysts while you're up there.
It's a few years now since I was there but several places had boats to rent on Loch Shiel with easy access. Ask at Acharacle or in local pubs & hotels. Great if the weather is fine but it's a big loch so I hope the wind has dropped by the time you get there.
My uncle and I had a few brownies on our day afloat but one evening I saw a local heading for the loch through a camp site (near Dalnabreck?). He came back in about half an hour with a good fish well over a pound. How? Bubble float and a team of flies - with a maggot on each hook. Not my style but it obviously worked!
This one might be too far for you but I highly recommend it:
Ardtornish Estate on the A884 and Loch Arienas.
I'm going back about 10 years now, but the excess food from the smolt cages were feeding up the wild trout into the 6 lb+ class and they were still game for the fly!
Rent a boat from the estate and row west from the mooring three bays (iIrc). You should see a rock sticking out about 30 metres from the shore. Fish here at dusk and see what you get! I know of one beauty that took a Blae and Black.
I know of another, too. I was stood in the shallow water near the rock with my float tube around my knees one evening in late June, circa 2001. It was late and the gloaming was finally dying when something big grabbed my fly and headed hell for leather out into the middle.
I was on the backing in seconds so turned around, sat down and kicked off after it as fast as I could. Battle ensued and lasted at least a quarter of an hour before, finally, I slipped the biggest trout of my life into my wee scoop net, lifted it onto the splash mat and let out a cry of joy then got out my priest. It had taken a size 12 Claret Bumble on the top dropper.
By now it was pretty dark so I began the long kick back to the shore. Night had set in by the time I touched solid ground again so I decided I'd been blessed enough and carried everything up to the car, using the headlights to pack up my gear. It was only then that I could see .... my fish was silver!
It turned out to be a 6 3/4 lb sea trout, a real rarity on the loch in those days, although Arienas used to be famous for them. Had I known I would never have killed it, but in the dark of night I'd had absolutely no idea it was a running fish.
The following day I was out again, rewarded with a couple of brownies around the 3/4 lb mark - and another sea trout of about 3 1/2 lbs. That one went back!
I've no idea how the loch has fished in the past ten years but if the cages are still there I bet that the big browns are, too. If you make it please let us know how you got on.