Is this a good build for 500$

Solution
Depends on what you want to do. While this is a capable PC, you can't really play games with it. If you wanted to game you could build the Tom's Hardware Budget PC and get better gaming performance.
 
Solution
What are you going to use this system for? I noticed you didn't include a discrete graphics card. That power supply is a bit overkill if you're going to use the i3's on-chip graphics.
 


I plan on getting a good starting point
I found a good deal on the PSU so I jumped on it
Any way I'll definetly be upgrading and I dont want to have to replace the PSU
I also dont want to rewire the thing