If you search eBay you’ll see lots of redwing boots with white soles worn down to weird smooth shapes even though the upper is still in serviceable condition.
They’re Goodyear welted, so very easy to resole, any competent cobblers should be able to do it. when I bought mine in Bath the chap in the shop said the white sole will wear, but they can be replaced with something like a regular Vibram sole.
£55 isn’t bad, I’ve got a really old pair of Vans that the sole had worn through showing the air pockets. I found a place in Melksham who could resole them, cost me £40, about half what a new pair would cost, Vans don’t do a style like mine anymore, they’re pretty well worn, but they’re comfortable, and they’ve probably got another five years in them, and I’ve had them for more than ten at least.
Could you ford a stream in those redwings and have dry feet?
They have a bellows tongue that goes up as far as the second eyelet from the top, so that’s a yes, sort of, but they ain’t wellies, so deep puddles, fine, but I’d be wary of anything deeper than your ankles.