Rickson Gracie said:
if the preamps are in my way of doing this then i would like to upgrade.
They may and they may not. There's just so much more to this than just worrying about your mic pres. There's monitors (Wharfedales may or may not be the envy of the audio community). . . room design and treatment . . . the list goes on.
will i really hear a jump in quality if i upgrade to a baby bottle mic rather than get a new preamp?
If the Baby Bottle is a better fit for your voice, then it probably will be. If it's not, and it turns out your voice sounds better on the GT, then you've downgraded. Whether or not your mic is an "uprade" is relative to how it reacts to your voice.
im using a p4 laptop thats a couple of years old. mayabe i should i upgrade that? the laptop seems to be working well though. no crashes.
I actually don't like the sound of a P-4 laptop, particularly on vocals.

And I don't think they work very well with Blue microphones.
I'm just razzin' ya.
Honestly, though . . . and I'm just trying to help you out here . . . but it just seems like you're focusing a lot right now on gear, which is fun. It's a fun thing to get hooked on. But there's just so much more you should be focusing on right now if your goal is to get that ever-elusive "pro-recording at home." If you can't already get that (or at least get close to that) with what you've already got, then you need to keep working at it until you do. It's kind of like saying: "I'd like to play Guitar like ____ (insert name of Guitar hero) . . . what kind of guitar should I get?"
A wise step would be to upgrade your monitoring setup . . . and address the accoustical side of your monitoring. Then learn about accoustics on the tracking side of things and improve those. Become an expert on accoustics and train your ear. Then you might have an outside shot at getting those "pro" recordings you want.

Or you could just spend your money on stuff that's fun to buy. Nothing wrong with that -- not that it will get you any closer to your goal, but it is fun.