The 18" 150 rear is a complete pain to find good rubber for. You will not be able to get a Pirelli rear.
I ran a 93 FZR well into the I group, it will run about even with an SV650 if you really want it to.
Being a heavy bike, you will learn how to link turns together, otherwise you're just not going to get it to flick over.
You're not as likely to induce a highside when rolling on the throttle, I would routinely roll to the throttle stop exiting a turn with no wheel spin.
I put about 25,000 miles and a good amount of track time on mine, and the motor was still rock solid. They seem prone to blow fork seals, and the front springs will be worn out if they haven't been replaced lately. All being said, it's a great bike to wail on, not having to worry about trashing an expensive bike.
If I were buying a low cost bike, it would be a SV, but you can run the FZR with no trouble.