Don't add a SSD it will help your gaming performance 0 not one bit.
You need a CPU cooler for sure but their no reason to waste money on the Arctic 5 paste what comes with the hyper 212 will work just the same. The CPU cooler is very large but will fit inside you case took a while to find yours but here it is just the front was changed for Cyberpower.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811517027
Then get rid of that power supply Cyberpower puts the cheapest crap in them they can have made for them.
Then upgrade the video card.
Just a bit over your budget. I would also add another fan in the top of the case blowing out.
http://pcpartpicker.com/p/nnZkYJ
A generic comparison of your card to the new R9 380 about a 75% gain.
http://www.hwcompare.com/19784/radeon-r7-260x-vs-radeon-r9-380-2g/
Low priced fan I would mount it in the front blowing in (it moves more air than what you have installed) and mount the original front fan in the top of the case blowing out.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835200049
The total would be about 20 bucks over budget but cure your heating problems, give you a reliable power supply, and give you a nice gaming boost