Hello Georgia Peach,
Some pointers on your list of parts (not criticisms )
Your after market cooler, using any cooler other than that which is supplied with a PIB (processor in a box) has the potential to void the standard three year CPU warranty.
The warranty details provided by Intel are somewhat vague and using a third party cooler does not automatically void your warranty but please be aware of the following stated by Intel;
damage to the Product due to external causes, including accident, problems with electrical power, abnormal electrical, mechanical or environmental conditions, usage not in accordance with product instructions, misuse, neglect, alteration, repair, improper installation, or improper testing;
Full Intel article here
With the above in mind I would suggest that you first try the stock cooler provided, if you later decide to use a third party cooler because you are unhappy with the performance of the stock cooler please be aware that you use any third party cooler at your own risk.
FWIW: Having asked an Intel representative the question regarding third party coolers voiding the Intel PIB three year warranty**, the answer was no it does not directly void the warranty, Intel CPUs returned under warranty will be subject to inspection to determine if the processor failure was the result of incorrect installation of the processor and/or the cooler or usage outside of the recommended Intel guidelines such as extreme overclocking.
** Transcript available if required.
The MB while ok would be better if it was the full ATX type as the smaller mATX can be tight for space and especially with the newer more powerful add on video cards which are often around 12" long and take up two slots on the MB.
Increase the Ram to 16GB.
Not convinced that the case is a good choice, take a look at the Newegg reviews here and you will see why.
Be more than happy to see what parts I would suggest for around the same budget.