Long legs – the SV won’t be any better for you than the CB750.
What you want is a Dual Sport or Tall street bike.
A 250cc dual sport is a great learning bike to teach you the ropes.
The 650 dual sports are pretty easy to ride from all I’ve heard, but I can’t speak from experience.
There is also a Suzuki 400cc dual sport with a number of people absolutely love.
Other tall choices include the Suzuki V-Strom 650 (DL650) and Kawasaki Versys. Both sit you more upright and have taller seats than other street bikes but less than a 650 Dual Sport. While both friendly bikes, they aren’t truely beginner bikes and you will find yourself less at ease on them than you would a 250cc Dual sport (or even a 650 dual sport, so I’m told).
“The two seconds between ‘Oh S**!’ and the crash isn’t a lot of practice time.”