Caveat- by doable, I mean no hike a bike style carries, but there’s plenty of paths in the lakes that fit that criteria I reckon. No one wants to carry an ebike over a pass.
Up coledale houses definitely doable, this opens up loads of options, most of which are in the TOTW at top of forum, one option could be off whiteless pike, rannerdale knotts, then back via rigg/sail beck.
Other doable options (happy to be wrong, I will admit to having a poor detail memory on climbs!)
Keppel cove up helvellyn
Skiddaw main path*
Walna scar
Yoke/Ill bell/nan bield
Langstrath then over FP to Eskdale hause
Over mungrusdale Common onto Blencathra
Over Wharnscale from honister
*this is steep and may get hr up too much Tony, my first ebike ride was riding the rhinns of kells, the first climb up coran of portmark is as steep as Skiddaw, my hr was up around 160.
You’d suggested on facebook getting a munro or 2 in this year, which was before your wee hr issue, let’s get some ebike lakes rides done instead mate.