Pentax have always tried to pack a lot into a small space, even the K3II is diminutive compared to similar offerings from Nikon & Canon, If you want a really chunky camera you may want to consider one which will take a battery grip, unfortunately that rules out any of the "entry level" models, including the K50.

If your prepared to wait and save the extra cash then go for a K3II, otherwise a pre-owned K5 or K3.

Having said all that, if you can try a K50 and your happy with how it handles then buy one tomorrow, it's a very well specified model and includes all the advanced shooting modes.

As far as I'm aware the only way to do this would be to have a "Dual Boot" system whereby you choose which operating system to use when you start up your PC, I don't think you can run photoshop installed on the hard drive under windows 7 if your running a separate drive with WIndows 10, as far as I know when you install (most) software it puts something in the windows registry.

As for putting the Hard Drive into the new PC that will depend on available space and the type of connection it has, it may also affect the warranty on the new PC,

To be honest I think you'd be better off re-installing the lot on your new PC and keeping the old hard drive as storage.

I'd stay well away from York Brian.

Ripon is worth a visit (assuming the roads are passable) although the Racecourse is very likely a boating lake just now.

The Cathedral is well worth seeing and the town centre is well above flood level.

TRIVIA

Alcohol is NOT Trivia

Why didn't you shower with salt water then rinse off with the bucket?

Ours went on the blink last February and got condemned We were without heating or water for about 5 weeks, fortunately the weather was quite mild for the time of year.

Set us back around £1600 for a new one

Those are cracking shots David

Is it me or can anyone else smell wet dog

and it's about the only decent image among them, the others just look like snapshots to me.

Time to search Confused.com methinks