Depending on how long you have I'd say Bakewell is worth a visit using A6, I grew up there many years ago....very nice tarts & puddings, not something I'd feel comfortable saying about any other places
....you're also close to Chatsworth House at Baslow , if you head from there towards Tideswell along A623 then Peak Forest you're close to getting back to the A6 and completing a loop back into Buxton, should be an enjoyable drive in your R depending on weather although I'm guessing the in that the rain is just seen as a challenge!
.....enjoy your trip, we're off to Oban on Monday, can't wait, first long drive in our new Gti