what size psu to go with?

[Sumoquirkey]

Im in the process of building a parvum system ,i5 4690k ,msi r290 ,1 ssd ,pump res combo , 4-6 fans and was unsure what size psu to go with it, Ive always like corsair brand wise ,currently have hx750 in my rig im using now ...what do you recommend ? was going to order this weekend
cheers in advance Q

 

[Sumoquirkey]

I was intending to keep my current rig going so its been a complete new rig build
Any thoughts on the corsair rm 750? especially the flat cables !