Hmm, ninthace, Hawes to Keld is only a hop, whereas Horton to Thwaite would be quite a trial, I reckon. Plus I favour youth hostels wherever available, and I like Hawes generally - e.g. the chippie. I've stayed at the THI and it was ok, although I gather it's changed hands since 2015.
It's great to have Bowes as an option again, though, and useful for those happy to hop! I tend, in my excitement, to rise with the lark, which would put me in Keld by lunchtime with nowt to do.