There are more Olympic pistol sports than just free pistol.
Currently the Olympics include the following ISSF shooting events:
50 meter rifle
50 meter pistol (Free pistol)
25 meter rapid-fire pistol
25 meter standard pistol (women only)
10 meter air rifle
10 meter air pistol
Trap
Double Trap
Skeet
Of the guns you list, the only one that would be acceptable for any of these is the Trailside. The higher-end variants would be a decent pistol to get started in 25 Meter Standard pistol, or NRA Bullseye, and you could try using it for 25 Meter Rapid fire. But once you rise to a certain level of accomplishment, you'd be dumping it for something along the lines of the Walther GSP, Hammerli 280, Feinwerkbau AW-93 or Pardini SP-New.
For more information on International-style shooting competition, check out
USA Shooting
Also, Biathlon and Modern Pentathlon include smallbore rifle and air pistol components, respectively.
There are no "practical" style shooting events in the Olympics, but there is nothing wrong with shooting both International-style events and stuff like IPSC. I know for a fact that Cody Maxwell, who was vying for a chance to shoot Rapid Fire Pistol for the US shot occassional practical pistol matches.
At the end of the day, what it really boils down to is time, and those who are Olympic-grade shooters practice like it's their job; several hours on the range every day.
If you've never shot these events before, the best thing to do would be find a local club that hosts practices and competitions and go for a visit to see if its something that interests you.