What's up alohaboy?
The Telecaster is an AMAZING guitar, so you're making the right choice. As far as what you spend, don't sweat it for right now, get the best you can afford and use it to experiment with the sound to get things right.
I play with a band out of Atlanta called Missy Gossip and the Secret Keepers. We do alt-country/Americana/indie type music. (Think Old 97s meets Patsy Cline meets the rev, etc.) For the band, I play a Nashville Signature Telecaster. It's like a standard tele with an added third pickup between the bridge pickup and the neck pickup. I feel it gives you that gritty twang you expect from a telecaster, but allows you to fatten the sound up when needed. I got mine for under 500 bucks out the door at Guitar Center because it had a ding on it.
When it comes to what type of setup you should look for if you're trying to get that same kind of sound, I wouldn't put too much money into it right now. The twang is going to be a big product of effects, setup, and playing style before the guitar. If you're just starting out, I would recommend getting a Squier tele and learning some good country chops to build a foundation before sinking money into a nicer tele. (Youtube or guitartricks.com)
Hope that helps! Good luck and enjoy the new tele!