To 'answer' your first two questions literally ... I don't think anyone is going to have that information...
People respond/gain differently - so there's not going to be a portable single answer across all practitioners,
plus .. they don't tend to keep detailed logs of their routines vs the results,
plus .. they tend to mix and match methodologies - so it's confounded to say what stressor caused what result,
plus .. you usually have to go passed a goal in order to get a cemented figure
at the goal. (If you just go up 1 inch and stop, you'll usually lose a bit of that on a protracted layoff.)
Rather than rely upon the [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words] for
all of the gains, you'll make faster progress if you follow something like DLD's
first routine (where he got his first couple of inches when starting out way back when) -- while using the [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words] as usual to assist with facilitated remodeling of the tissues.
And RedWood7's got some great info there ^ on taking breaks for massage and bloodflow. The manual work should include angles and 'cranks', that's a stressor you're not getting from the straight-out force of the [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words], the DLD routine I linked is going to be full of that.