Looking for suggestions on upgrades.

[Somewanka]

I'm currently looking towards making some upgrades for my computer, which is kinda old since it's a Vanquisher 2 Level 1 from Digital Storm. It's about..I would say close to being 2 years old.
Here are the parts: 
Case:Standard Chassis Model 
Fans: Standard Chassis Fans 
Processor: AMD FX-4300 (4 Core) 
Motherboard: ASUS M5A78L-M LX Plus 
Power Supply: 430W Corsair CX 
Graphics Card: AMD Radeon R& 260 X 2GB 
RAM: 8 GB 

Now I am more looking towards upgrading the graphics card, Case fans, and Ram. I'm not sure if I should change the CPU or touch since I don't exactly have much experience with PC parts. I want to see if I can get better fans to keep my CPU cool since it usually tends to use up to 85 C when I play a game like League of Legends or GTA V. I'm pushing my budget for the parts to be at most 50 bucks since I don't want to spend huge loads of cash at once for one part.

[spartaman64]

if you are going past a r9 380 or a gtx 960 you will need to upgrade the cpu and getting new fans probably wont affect your cpu temp that much you need to get a new cpu cooler if you have the stock one. and have you tried to set a more aggressive fan curve on the cpu? because on my fx6300 with the stock heatsink i only went up to 55 celcius and i even overclocked it by 0.5ghz

[Somewanka]

Well I am using a stock CPU cooler, I believe, so I will have to change that for something much better. Maybe I'll try getting a new CPU if I feel I can get a new graphics. Any suggestions on that as well a guide for changing CPU and its cooler? 

 

Also, I have been considering changing to Nvidia since I hear some friends say Nvidia is better than AMD but one of my friends say that switching to Nvidia from AMD is a bit difficult.