WHAT DO I DOOOOO???? is my build good???

Solution
That looks good except for the case and PSU. I generally don't touch Raidmax and those EVGA 500B PSUs are rather low end. And you should also get 2 x 4GB instead of 1 x 8GB. If I may make a couple of suggestions:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-6100 3.7GHz Dual-Core Processor ($158.50 @ shopRBC)
Motherboard: Gigabyte GA-H110M-A Micro ATX LGA1151 Motherboard ($73.98 @ Newegg Canada)
Memory: Kingston HyperX Fury Black 8GB (2 x 4GB) DDR4-2133 Memory ($54.50 @ Vuugo)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($65.45 @ Vuugo)
Video Card: MSI Radeon R9 380 4GB Video Card ($289.00 @...
That looks good except for the case and PSU. I generally don't touch Raidmax and those EVGA 500B PSUs are rather low end. And you should also get 2 x 4GB instead of 1 x 8GB. If I may make a couple of suggestions:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-6100 3.7GHz Dual-Core Processor ($158.50 @ shopRBC)
Motherboard: Gigabyte GA-H110M-A Micro ATX LGA1151 Motherboard ($73.98 @ Newegg Canada)
Memory: Kingston HyperX Fury Black 8GB (2 x 4GB) DDR4-2133 Memory ($54.50 @ Vuugo)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($65.45 @ Vuugo)
Video Card: MSI Radeon R9 380 4GB Video Card ($289.00 @ Canada Computers)
Case: Cooler Master N200 MicroATX Mid Tower Case ($57.95 @ Vuugo)
Power Supply: SeaSonic S12II 520W 80+ Bronze Certified ATX Power Supply ($79.98 @ Newegg Canada)
Total: $779.36
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-03-23 21:04 EDT-0400

A little bit more expensive but better case and power supply which will last you longer.
 
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