GrumpyGreg said:"Ah yes I remember it well" It's been a few years but isn't Streat Hill a semi surfaced lane all the way past the farm up and over the top....
My personal (inverse) fav in those parts is the two bridleways up onto Black Cap esp the one at Courthouse Farm. MTB or roughstuff tourer with triple only, huge side plate cassette preferred!
Streat Hill is the road bike option as it's only paved to the SDW at the top. I use the mtb for the others with, as you say, the frequent use of the large sprocket. The 'tank track' from the Half Moon is a good test with concrete merging into chalk, mud and flint. Definitely multi terrain!