That poor unloved '04! It is one of the best year FJRs for problem free riding yet there it has been just sitting there.
Look at the tires, even if they have low wear but are old they should be changed. No biggie.
Ticking is highly unlikely, even if it does eventually start to tick it doesn't cause the bike break and not run or cause it to run bad, it will continue to run normally for a very, very long time. Your job would be to ignore the noise for tens of thousands of miles, then down the road you may need to check the oil level once or twice between changes.
The CCT is really almost a non issue with a bike that young. It should be changed at some point but it's not an emergency. Even if the CCT allows the cam chain to start to make noise it's not going to effect riding, it's just a notification that it's time to start thinking about getting it changed.
If you do buy it, you should run some kind of fuel system cleaner through it occasionally because that poor bike has sat a lot.
The battery will probably have to be changed.
Fluids should be changed, especially the brake fluid and the ABS metering block should be cycled. There is some small risk that the rear wheel ABS spool may be frozen. The brakes will still work fine, but the rear ABS won't stop the wheel from locking on hard braking -- just like a normal motorcycle.
If the price looks good to you bring it home and put some miles on it.
