Get that fan first, breh. I recommend the Hypermaster Evo 212. Its what I got, and It'll take care of you. Just 35 @ newegg too. Was kinda a bish to install for me, bein my first build, but stick with it and follow directions and you'll be aite.
Think about having your OS and all your regular important files n shyt on your SSD, and everything else on the HDD. I got a 1 TB HDD for all my bullshyt, but with my OS and everything on my SSD, I hit the reset button on my computer, and I'm back at my login screen in no more than 8 seconds
Gotta make sure its quality SSD tho breh. I went with the Samsung 840 Pro cause I don't want no muhfukkin issues with my files n shyt in the future. Save up and throw quality shyt in your rig, and itll be worth it for sure