Welcome to the forum!
That yarn sounds really yummy! No wonder you want to knit a sweater out of it!
For gauge, the number of stitches per inch is far more important than the number of rows per inch. Plus, you'll want to be attentive to what the pattern is asking for--it may require fewer or more stitches per inch than those listed on the yarn itself.
For patterns, check out Knitting Pattern Central
, the Knitty
archives, and the Magknits