you could save some coin by getting a smaller psu. 550-650 would work just as well and maybe a little more efficient.
cooling you can go 2 ways. you can get a sealed water unit which will save some space inside. or get air cooling with a decent cpu cooler and fan.
almost any cpu cooler for your socket will do the job, some better than others but a lot of the cooling depends on the quality of the fan/s you use. noctua do some of the heftiest cpu cooler and some of the best fans. but if you cant quite streatch to that budget then something like the thermolabs baram with a yate loon 2200rpm fan will give almost (within 1-2 degrees) the same results for less than half the money. although when it maxes out it will be quite noisy.
so you may want to shop around for something that works almost as well but has a variable range of speeds, so its quitet at idle and reasonable at load. the gentle typhoon series are good for this.