Good choice. Sig makes great kits. If you're looking for a kit to start with, it's a good choice. Get a decent engine and it will be lots of fun.

Edit: I forgot a few things. A taildragger will be a bit harder to learn with. Not impossible, but they take a bit more work to keep straight on takeoffs. Also, an ARF will get you in the air quicker, but heck, it's winter. Building a kit by spring should be a piece of cake. Oh, and several people will try to convince you to get a .45 size plane instead. If you've got your sights set on .25s, nothing wrong with that, contrary to what some say, they are not twitchy, and fly great!