What will the PC be used for?
What monitor, keyboard, and mouse do you already have?

Gaming/Recording
Razer X chroma blackwidow
Logitech g502

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$3 over, 480 should handle most, if not all games, maxed @ 1080p and even 1440p and 4k (not maxed BTW), i5 should perform very well while streaming

You still didnt say what monitor you have.

i got two asus 144hrz montior

If you're gaming on 2 monitors, it'll obviously be a little more demanding than one. I assume you'll just be gaming on one monitor then the other for streaming?

They are 1920x1080? They are, more than likely.

Yes i will be streaming on one and other for twitch chat or anything
and yes there 1920x1080

Okay cool, yeah the 480 should run games ezpz. I'd wait a little longer for more build options though. Not everyone has the same opinion.

ye thx man i dont know much i am only 13 about to turn 14

Don't get that 480, it's a reference card. Reference cards suck, especially the 480. The single 6-pin on reference 480's are holding them back, if you get a 480, wait for aftermarket variants. Otherwise, get an aftermarket GTX 1060. GTX 1060 releases on the 19th, and we should have aftermarket models available immediately. Aftermarket 480s should be available on the 14th.

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Get the Cryorig M9i from Newegg for $20. $310 left for GPU, should be able to get a nice aftermarket 1060/480 for less than $280 easily though. 480GB SSD. 2TB HDD for mass storage. XFire support if you go with the 480.

Some alternative case choices;
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You can see my review of the H440, and Zayev's review of the Enthoo Pro in the Hardware Reviews sticky at the top of this section.