I feel you man, I got my computer cause I was properly settled in with a fulltime job also - my first real awesome computer. I got a top tier gpu, motherboard, ram (and ram amount) etc. along with the cpu.
You will have great CPU with this (the 7740) but ur gpu will only play shit on medium in 1 year, most likely, cause it only has 3mb vram, so while u have 16gb ram (and thats fine) u should probably save up for a 1070 (or ideally a 1080 ti) though they are shitload more expensive, if you're looking to play NEW games in the coming years
if you're alright on medium settings, it's GG and your setup is fine, just thought u should know