Changed my planned build...(opinion)?

JS is correct. Down the road you will wish you had bought a better unit. You have chosen good hardware for your new build, complete the statement by buying a reputable PSU. Not doing so creates the chance that your funds and hard work to create this system might go up in smoke. I have seen a lot of these no-name brands destroy a system because the customer insisted on being empty pocketed for a good name brand unit. Not a complaint, this action fills my pockets ! Other than that looks good to go. Hope it helps.