Looks good, but if you are not overclocking, maybe you should stick to the intel stock cooler. And about the PSU, you can even get a 450w, because your system will draw no more than 300w at full load. But for futureproof if you plan to upgrade, than bigger PSU is ok.
1. a 4570 at stock will run cool, the stock cooler will do the job.
In fact, the 80mm fan of the cooler you picked is no more effective, and will be noisier.
If you want more quiet, look for a $30 cm hyper212.
2. Extra fans will not be needed. Defer on those, you can always add them later.
3. I think it would be prudent to buy a 4670K and a Z87 based motherboard instead. You need not use the unlocked multiplier, at least initially. But, a 5% price premium will buy you a 20% performance increase for whenever you need it.