Is this system alright?

Cerberusbeast

Reputable
Jan 10, 2015
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4,510
Im upgrading my PC parts and I was wondering if this is alright.

GPU: Gigabyte GTX 970 4GB

CPU: i7 4790K

Motherboard: Gigabyte Z97-D3H

PSU: Thermaltake Litepower 700W (This PSU is old and Im not sure if it'll work with the new parts so If anyone could tell me that would be great!)

Ram: 16GB (Not sure about the brand etc..)

This is what I will probably be building so I was wondering if I should be replacing anything or making any adjustments?
 
Because I'm planning to stick with these parts for the next 2-3 years most likely so I would like to get good ones which will last a long time, I guess I'll check how much the good PSUs are these days.