1) you don't need thermal paste. the cooler that comes with the i7 has pre-applied thermal paste which is fine.
2) if you can get 2133 memory cheaper go with that and save a few bux. if not 2400 is fine.
3) the 970 you chose has the stock cooler. you want to pick one with an aftermarket cooler. the stock one has the single blower fan. aftermarket generally look better, cool much better, last longer and have 2-3 fans.
4) you'll need a better power supply than that. choose one from tier 1 or 2 here: http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html
5) you are overspending on an i7 if this is a gaming build. an i5 is the way to go. it'll give you very similar performance and will balance your build better. you can invest in a better aftermarket cooler on your gpu, a fuller feature mobo, bigger hdd, etc.
6) idk if you know but you picked a mini motherboard for a full size case.
I believe the Seasonic Gold SSP-550RT that he chose is equivalent to the G series (tier 2) and better than the Bronze Antec High Current. 550W is fine for a single GTX 970, but if you want to allow for a possible higher end nVidia card in the future, you could consider a 650W unit. If it's for gaming, an i5 6500 with a better GPU would get you more bang for your buck, but if you were going higher than a GTX 970, I would probably wait for Pascal.
Actually I'd drop to an I5. I7 is overkill for gaming. The MSI B150M is not recommended. Instead go for an Z170 based board for the extra PCI-E lanes and faster than 2133 memory speeds. B150M is a business class chipset. The 120GB Samsung EVO works but a 240GB is more recommended. A 120GB will fill very fast with games installed. For business 120GB is fine to install office and photoshop and other apps.
Here's a quick system. I went I5 and upped the board to a Z170. I didn't include an SSD to stay within budget. One can be added at any time in the future to partner with your 500GB. I choose a better power supply but there was no price. As for the case I went with the standard Corsair 200R but any case works. It's personal preference.
You could up the I5 to the k series if you want to overclock and get a nicer cooler as none is included with the I5. There isn't much difference in price and a Coolermaster EVO or Cryorig H7 isn't too expensive. No thermal compound would be required if you got an aftermarket heatsink so the $11 for the artic silver could go towards a Cryorig.
Actually I'd drop to an I5. I7 is overkill for gaming. The MSI B150M is not recommended. Instead go for an Z170 based board for the extra PCI-E lanes and faster than 2133 memory speeds. B150M is a business class chipset. The 120GB Samsung EVO works but a 240GB is more recommended. A 120GB will fill very fast with games installed. For business 120GB is fine to install office and photoshop and other apps.
Here's a quick system. I went I5 and upped the board to a Z170. I didn't include an SSD to stay within budget. One can be added at any time in the future to partner with your 500GB. I choose a better power supply but there was no price. As for the case I went with the standard Corsair 200R but any case works. It's personal preference.
You could up the I5 to the k series if you want to overclock and get a nicer cooler as none is included with the I5. There isn't much difference in price and a Coolermaster EVO or Cryorig H7 isn't too expensive. No thermal compound would be required if you got an aftermarket heatsink so the $11 for the artic silver could go towards a Cryorig.