I suspect the brick under the sidestand is due to the fact that the center stand has been removed. This is a bad idea on these bikes for a couple of reasons.
The obvious one is the difficulty in removing the rear wheel without it. Its impossible to use a swingarm stand, and the bike is difficult to jack without steadying the front end.
The second problem is due to one of the quirks of these early K bikes. The bike must be parked on the center stand always because if left leaning on the sidestand, oil will run into the cylinders past the rings and result in a cloud of blue smoke when the engine is started. This is quite embarrassing, but apparently does no real harm, and the smoke clears after a minute or so. My engine never used any significant amount of oil. I suspect that's why the guy parked it on a brick so the bike is more vertical. That's cool as long as no one bumps into it or a gust of wind hits it and knocks it over from that precarious vertical position.
If the bike is rough to begin with, the cafe look of this bike is probably OK if you like the look. I would definitely want to fit a hugger (rear fender) to cover that rear wheel to keep road debris and water from being blasted forward and up onto the battery, ECU and sensitive electronics etc. This will protect the bike as much as the rider. The stock bike has the rear wheel well shielded from the rest of the bike.
Racing seats are notoriously uncomfortable and that one looks like a plank. Perhaps that is the nature of the beast, and as long as you don't plan any long rides it may be OK. These bikes thrive on long fast runs though.
2004 Rebel 250, 2003 BMW K1200GT (roadburner), 2004 BMW R1200GS(all purpose),
1973 Norton Interstate (in a box in the basement)
1968 Triumph Bonneville