Hi there
S & B in A4 is a good general choice reticule.
As far as a fixed magnification choice is concerned, I think there is a lot to be said for choosing the same as your bino's which for all practical purposes means 8 x 56.
I have this and 8 x 56 bino's to match.
Nothing worse than glassing a buck with 12x something or other and thinking "in range", only to find that it may not be when you look through the scope!
If you go up a notch then 9 x 63 so as to keep the "7mm exit pupil times the magnification rule. Bino's might be a bit heavy though
regards
Buckstalker