2D Dim Questions

I have a part that is essentially bent.  It is making dimensioning difficult.  See attached.

1- How can I make a view that is normal to the flange coming off the bent part?  Or any of the bent part, for that matter?

2- In DrawingView2 (front angle) I have a dim that is 51.00.  Above it you see 48.67, again, because of this angle.  Apparently the only way to auto-dim it is with a proper angle, thus I must use the front view to dimension the hole's offset from the edge of the part (which is 51.00).  But it is not readily apparent in that view that there's a hole there.  In fact, had the top of that flange not been a half-circle, I never would have been able to dimension it to begin with.  So- how can I make hidden lines like those that would exist for the thru-cut hole visible?

3- Is there any way override what a dim says so that I could just put "51.00" where "48.67" is?

SolidworksDrawings And Detailing