[SOLVED] Please help me choose a PC case ?

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Maybe this. 40$ more than 510, possibly cheaper Friday. It's a great case, have one myself.
Black Friday isn't likely to offer anything interesting for GPUs, they are too scarce. BF is when they get rid of unsold inventory. There might be bundles with GPUs, but I doubt there will be much opportunity to buy just a graphics card.

I highly recommend the B560 chipset, it will allow you to use XMP profiles on the memory, which the B460 stupidly has disabled.
 
FYI, the Cooler Master chassis provides 3 fans. The Deepcool one doesn't give any at all.
So if you don't have any spare fans lying around, then the cost of the Deepcool one just went up a fair bit... not sure it can be called a budget chassis anymore.
 
Maybe this. 40$ more than 510, possibly cheaper Friday. It's a great case, have one myself.
 
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