You might try some swatches using smaller hooks and see what you think. There are also combinations of crochet stitches that might work better, too (like a sc in first st, dc in next st across for one row and on next row, dc in the sc and sc in the dc). Different combinations of stitches will give you different results, of course. You might also try using the slip stitch throughout. It's shorter than the sc, so I would imagine it would be less holey.
And I assume you've looked at crocheted mittens on Rav, right?