Hi as far as I know you want the rope as high as pos to make it easier to get up. But you will kneed a tall sky pole to get over the top of your engine!
I sky behind my rib using a bridle on the D ring on the transom with no problems. I have seen people us the A frame but it will knead to be pretty beefy.
As for your Rib should be know problem as far as I can remember its
18 knts for combos
25 knts for mono
40 knts for bear foot