I have a standard rig, not a tall rig. But I also have a high cut genoa on a ruller furling.
If your sail is indeed cut for a standard rig, then your sail area is somewhat smaller then it would be on a tall rig. This should help to compensate for the higher hoist of the tack.
You can always install a pendant as previously described to lower the head of the sail.
The tall rig model is only 2 feet higher in length of the mast, but it naturally creates more weather helm effect.
If you are not carrying as much sail area as the tall rig normally specifies, then your weather helm should be LESS the then typical tall rig model C 30's.
I wouldn't worry too much about weather helm, unless it feels severe.
But the mormal way to reduce weather helm is to reduce sail area, so
your sail area being reduced should only help you, not hinder.
I used to have a 28 foot S 2 sailboat, & when a rigger placed a pendant at the foot of the jib to raise it so it would help the furler operate, it did increase my weather helm. Lowering the head of the sail should have the opposite effect.
Good luck & trying out different cominations of rigging won't cost you much, other then time & effort until you find the right combination. I never stop tinkering with my boats & making improvements, albeit small ones can create big gains & be very satisfying.