Sell the brace if you bought it for handling! It does not help handling any. It is just for cosmetics!
As for the springs, does Eibach make oem height springs? If you arent looking to lower the car, I would steer clear of them. They are lower, and in many people opinions, much worse quality than Hotchkis.
can also help a lot. Look into the Monroe severe service if you are on a budget. If you can spend ~$260, then look into the 1104/0929 Bilsteins.
As for the sway bar, I wouldnt be the one to answer. I was one of the ones who payed the high prices on Hotchkis. Yes, they were overpriced (or so it felt) but I love them.
One thing to remember: If you do add a stiffer sway bar to the rear, be sure to replace your lower control arms, or your sway bar will most likely shred right through them!
I know you are on a budget, but better to save for this stuff. It will pay off!
For a cheap, bang for the buck suspension mod, check out the ZQ8 Bump stops!
Look at spending under $30 for a great item!