No one can tell you, you will have to experiment or judge by other balls you own. A strong drilling bears the danger of early energy depletion of the core, while a strong coverstock bears the danger of burnout. Both extreme setup combinations (strong core/weak cover et v. v.) can be very condition specific - an option if you have a condition that calls for such a ball. But it is IMHO very difficult to generalize on this. Personally, I'd rather go with a weaker coverstock (which you still can fine-tune with ease) and a strong drilling, even though I would not expoit the core's potential to the max when you play light oil. Pin above th fingers will help, too, delaying the core's reaction.
--------------------
DizzyFugu - Reporting from Germany
Confused by bowling? Check out BR.com's vault of wisdom: the FAQ section

I tend to feel that the bowling balls of today don't need to be drilled really strong.

There are many ways to drill up an arsenal.  I used to just drill everything the same and let the cover and cores separate the reactions.  I feel this is a good approach for ones main arsenal.  Then add one specialty ball and layout and be good to go.

Another approach is to just choose one PIN position and use that for each ball in your arsenal.  Just change the location of the MB's and or CG's, with and without balance holes, to give yourself different reaction shapes.

Then there's the common approach which is to drill each ball completely different (different pin, cg and MB locations).

I tend to use the same pin position on most of my equipment.  I do have a couple specialty balls that are drilled different.

To answer your question:  Just make sure the pin location is not too strong and you should get a good reaction.  If you drill the ball with the pin in a really strong position it's going to flare a lot and early which may make it puke on the back end.
--------------------
HAMMER NO MERCY is Un-freaking real!  Using this ball is like cheating!