Looks great. I think it would/could look a bit better if you dropped it a bit more though and I think it would also look better if you ditched the front lip and side skirts. As for the alignment question....I have no knowledge on alignments, but Flyin Miata has some alignment numbers on their sight. Here's the link http://www.flyinmiata.com/tech/alignment.php. I'm sure someone else will be able to give you a lot more information about alignments.