My Savage was my first cruiser...and the seating and peg position was a bit of an adjustment for sure.  However it only takes a week or two and it will start to feel normal. Another adjustment comes every time I ride a bike with floorboards....seems weird to have to lift your foot to reach the brake pedal.....I am used to it being under the ball of my foot.

Rear sets would be a strange fit for the stock cruiser seat....it is low, the rear set pegs are high and far back.  I think it would be really uncomfortable - Cafe' bikes and street trackers have much higher seat heights, and it provides the seating position needed for the rear set pegs.

If you are not a fabricator....buy the rear set and kick stand mounts from RYCA. It would take days and days to cut and build your own....even if you did have a welder and knew how to use it.   I bought the parts from RYCA and they fit well.....but I used pegs and pedals from Dime City as I don't like how far the toe pedals stick out on the RYCA pegs.  I also had to build my own shift and brake linkage.