Only give advice if u owned the guitar or have played it for some time.

How good is the Ibanez Rg (Fixed) when it comes to soloing. Feel free to mention everything from playability to sound to anything u can think off.
Number one your guitar is not as important as your amp or effects when it comes to soloing. also i dont believe that your guitar comes equipped with a whammey bar which is not key but definately can add flavor to soloing. What kind of sound are you going for metal soloing, rock soloing etc.?
It's got a very fast and playable neck, especially for soloing. I don't like the thin neck nearly as much for chording/riffinf, but for soloing, it really is amazing!

As for tone, it is all up to how you dial in your amp and what effects you use.