SV 650 is not the best first bike, too much torque. Also, it’s too “sporty” meaning that your body is reclined forward – you get used to it eventually, but it’s just not very comfortable and your muscles will ache after 20 miles on the bike. I have Ninja 650R in my garage, it’s better in both aspects.
Your height is more important than your weight. It is important for the beginner to be able to put both heels on the ground when the bike is stopped. 600+ cc sport bikes almost universally have high seats that make flat-footing impossible for a short person. If you’re under 5’8″, I’d strongly recommend a smaller bike.
