Have you actually got any film processing equipment such as a processing tank? 'Cause that's pretty well essential for 35mm.

Here you are: https://petapixel.com/2016/06/15/osiris-f1-affordable-automatic-film-processor/
Its even got an F1 in its name. Made for you!
Unfortunately though it doesn't ever look to have been produced so maybe try this one instead:
http://www.diyphotography.net/the-filmomat-is-a-homemade-automated-film-processi...

Is the intention to make colour prints the traditional way with an enlarger or scan the negatives and carry on in digital mode?
Should it be the former, you'd need an enlarger which allows for adjusting the light temperature. Some enlargers have that built in, or you can get a set of Cyan Magenta and Yellow gelatine filters of various strengths to achieve the same thing.
My experience of colour neg processing was with C22 film so won't confuse things with kits for that, needless to day it wasn't as hard to do as some might suggest providing the processing temperature is kept stable, Albeit C22 required colder temperatures than C41.
If you're really into it, go for it but its a big investment just to do two or three films and abandon it all.
For colour you may be better initially going for colour reversal processing. Then before attempting colour neg processing get familiar with black and white.

I will say doing your own colour neg processing these days isn't any cheaper than getting the film developed commercially and given the availability of one hour services not even any quicker.

To be honest, is it worth it when you have digital where you can simulate an image processed in film if you wish.

According to page 53 of the manual the modes available are:

Face Detection (Detects and tracks faces of people. The main face detection frame for AF and AE is displayed in yellow.)

Tracking (Tracks the subject in focus. The shutter can be released even if the subject is not in focus.)

Multiple AF Points (Sets the focusing area to the desired area. The sensor is divided into 35 areas (7 horizontal by 5 vertical), and you can select a wider or narrower focusing area by using 1, 9, 15, or 25 of those 35 available areas.)

Select (Sets the focusing area by the pixel.)

Spot (Sets the focusing area to a limited area at the centre.)

So its not quite the same as using the viewfinder but it must be continuous if it can do tracking.

Yep, Go Back went too.

£159 https://www.cliftoncameras.co.uk/Pentax-Image-Transmitter-2-Software?gclid=CN6d2...

or £149 from SRS
http://www.ebay.co.uk/itm/Pentax-Image-Transmitter-for-645D-/192088273257?hash=i...

K5: Flucard probably not compatible unless someone knows otherwise.
K-3 : The flucard was designed to work with this.
K-1, KP, K70, K-S2: These have built in wi-fi which requires the Image Sync app on Android or Apple (not PC) so doubt it would suit though maybe OK if sideloaded into a Kindle tablet (can't see why that wouldn't work) but I've not got it working as it should on a standard Android phone. As I think you know, for PC use they're happy to sell you the Image Transmitter CD for a mere £200 !

I find it pretty nippy! Do you have enough ram in the computer to avoid it having to use a swap file?

Reading further suggests that Pentax's Flucard is only fully compatible with the K-3. There may be limited functionality with the K-50 and K5ii according to forum and review postings. Perhaps others may wish to share their success with other models. Could it, for instance, be used as an alternative to Image Sync on the K-1 and KP where the liveview feed doesn't come through?

With which camera?