I'd settle for a quarter.

Very lucky acquisition there by the look of it, Peter! And more so to your friend with his exceptional bargain hunting!
Do you have any recommendations for a good, inexpensive film scanner? I'm hoping to slowly pick up stuff to develop and scan my own film in due course but as it's my first forays I don't want to spend a fortune (initially)!
I hope you're keeping well!

WHAT?!


Why am I only learning about this now?!

Ah very nice! I'll be certain to drop you a PM asking for any/all suggestions on nearby activities. I read today that it's reasonably close to the Jurassic Coast so part of me wants to spend some time down there trying, and undoubtedly failing, to find fossils. Thanks!

I've understood it to mean staying in the same country, but I could be sorely mistaken! I know it's not unusual but since the likes of Butlins started seeing less custom I think it was an effort to glamourise the prospect of staying put (country-wise).
I wholeheartedly agree that it's a grim word.

Funnily, if you search 'Staycation' on Google, you get a box that gives a 'dictionary definition', saying that it's within one's home country. Alongside it, there's a Wikipedia synopsis that says,
'[...] in which an individual or family stays home and participates in leisure activities within driving distance of their home and does not require overnight accommodation'.
Take your pick! The Wikipedia entry also refers to it as a 'holistay', which I think is worst than 'staycation'...

Haha, well I hope you can tolerate us foreigners from Wales! Lock up your wives, daughters... and sheep...
I think it's going to be Thorncombe Farm but I'm not absolutely certain...
Of course not, we're all a sensible bunch so if anyone is presenting ANY symptoms whatsoever we'll probably call it off altogether!

Holiday to Spain that was booked is off the cards now.
However it looks as though we’re going for a mini staycation in Dorset instead!

Super crisp here Peter! Lovely work and great colours.

Aside from one lens, all I shoot with is manual, film era lenses.

Lovely camera is the K70. I thoroughly enjoyed mine when I had it.
I don't think you'd go particularly wrong with any of those 35mm lenses to be perfectly honest.
It sounds to me like you're swaying towards the 35mm f/2.8 Macro, personally, and I doubt you'd be unhappy with it especially as it's 'dual purpose', insofar as it acts as a normal field of view lens on APS-C and a macro lens should you need it.
Regardless, a good place for reviews is the Pentax Forums pages - do a Google search of, e.g., "35mm f/2.8 Macro pentaxforums" and you get the following page:
https://www.pentaxforums.com/lensreviews/SMC-Pentax-DA-35mm-F2.8-Limited-Macro-L...
Plenty of reviews for all of the lenses you mentioned, including the film-era lenses.
That 35-105mm f/3.5 is meant to be a stellar lens, often referred to as the 'stack of primes'. Good sharpness across the board, from what I've read, and earned itself something of a status amongst Pentax photographers for being versatile and sharp.
It's also worth noting that usually the flaws of film-era lenses that make them desirable. It's 'character' that more modern, more perfectly made lenses lack. If you want out-and-out sharpness, there's modern options for that, but you won't get swirly backgrounds a la the Helios.

My two pence: The M 50mm f/1.7 is a beautiful lens, and plenty sharp even wide-open. It's a good example of how sharp a lens can be, especially stopped down around f/5.6 and competes with the best of them at this aperture.
No harm giving what you've got a go and thinking about what you're missing in a modern lens!