You're on the right track, the rotor looks correct and in the right spot. If you're going to buy brackets, get the kind that have a bend in them rather than the ones that use spacers that bolt in at the housing. I have that kind, and had to weld the spacers to the bracket, bolt the brackets on, and then weld the spacers to the housing. The spacers had enough wiggle that no matter how tight I torqued the bolts down, the brackets would always come loose.