head up over kirkstone and then you could go:
Down the struggle to Ambleside, then explore the langdales, coniston or roads around grizedale.
Or down towards windermere from the top of the pass (nice descent), then turn off towards ings before you get to the roundabout at the bottom of the pass. After ings theres a combined cycletrack / pavement which leads to stavely then you can turn R in staveley and head towards crook and explore a lot of the little roads around there (underbarrow, crosthwaite, levens, strawberry bank etc etc).
Lots of nice roads to explore but i’d avoid:
Ambleside – windermere road
A592 Windermere to Newby bridge
591 windermere to kendal
590 at the bottom end of the lakes.
plenty of options for long / short rides with big passes or short steep climbs. Whatever takes your fancy really!
the wheelbase ‘tour de staveley’ is a nice route:
http://www.wheelbase.co.uk/le-tour-de-staveley/