a 2012 Sutra is a great find, they are good solid touring bikes, take care of it properly and it will last you a good long time. Now you can look into panniers and racks etc, start doing some planning and accumulating of camping gear etc etc and begin doing some riding with it on your bike.
I would suggest getting out as much as you can with a load on the bike, so you begin to get used to the extra weight, and the more you ride, the fitter you will be.
This will also give you an idea of how the gearing works for you riding on hilly roads, if you find that lower gearing would be a help, it is often possible to easily change out the small chainring at the front, the smallest one is often called the "granny" gear, I don't recall the specs of the Sutra exactly, but it is probably a 26t on the front, and at the back your largest gear is probably a 32 or 34t.

glad you were able to find this, enjoy riding.