This won’t be too popular around here, but hear me out…
You could also look at the Honda Shadow 750 cruiser, the Suzuki 50s (C50,M50,S50) or even the Vulcan 900s…they are way bigger than we usually suggest in here, due to their physical size and weight. They are all V-Twin bikes that have very smooth power delivery and don’t have enough power to jump out from under you. The performance level of these bikes is similar to the Suzuki GS500 or the Kawasaki Ninja 500, so powerful enough to get the job done, but not crazy…I test rode a Suzuki M50 this past summer and if I hadn’t ridden my GS500 to the test ride and jumped on the M50, I may not have noticed any difference.
The biggest problem with these bikes is the weight of them @600lbs+ they are not the ideal bike to start on, but all three will be more comfortable for you and have the size you are looking for (two up won’t be an issue for them either). All of them have been around for a few years and you should be able to get a good deal on a used bike…
As for the owners manual issue, go to the dealers service dept. and look at the Haynes or Clymer manuals…they are quite detailed and will help you maintain your bike with ease.
Good Luck!
Later.