So, how much new growth should one prune? Should one make larger cuts? The solution is not instantaneous; spring pruning should be minimally invasive. Limiting cuts to smaller outer branches is probably wise. Quite a bit can be accomplished with small hand held shears. Save the big cuts for next winter.
Hint: take pictures now so it is easier to remember how dense a tree can be with all its foliage! And enter the picture in Wildwood's Spring Photo Contest.