I am almost fit and almost mobile almost 70. I am short. Depending on the kind of riding you do, everyone has the great suggestions. But my thoughts are that since you are trying to be responsible with $, and you are upsizing (downsizing?), and you are interested in the Guzzi, I'd bet that you could find a used Breva 750 or Nevada for a song. They get no respect (cheap) but are good bikes and fun to ride. They have very different ergonomics from each other, so one might fit better. Compared to the Sukizuki their saddle heights are about 1" higher, and the weight about 85# heavier. I am able to move them around the garage easily, and can do short hops (not as well as your Suzuki) or long rides (not as well as a Jackal) comfortably. But, like I say, they (improperly) get no respect, so you'd have to deal with that.
