Like some of the bros here have said, you can get a much better system for $1500 from elsewhere. In fact I think you can get a much better system from tradepac for that budget without negotiations. $1500 is actually the budget that I had to get a decent gaming rig (meaning can play games at the highest settings, but no overclocking at all). Plus looking at what you've provided us, there are alot of crucial details missing (and no motherboard?)
Monitor: Try to aim for IPS. I recently switched from a Viewsonic IPS monitor to a PLS monitor and I can immediately tell the difference between the quality especially the whites. If not, LED 1080p monitor is good enough.
CPU: Someone has posted a list of i5 CPU for you to choose and his choices are good. Since you're building from scratch, you should probably aim for the Haswell series for cheaper cost and better power efficiency.
Motherboard: Will depend on what CPU you get but what I look for is durability, number of usb ports and SATA ports. Many people upgrade various components of their PC but only upgrade their motherboard once in a while so durability is important.
RAM: 8gb is typically enough but RAM is also cheap so you can go to 16gb if you want. Just make sure it's DDR3.
PSU: 650W seems to be an overkill to me, you can probably make do with 500W but I'm not an expert on this.
Storage: I really recommend getting a SSD for your OS and a HDD for your storage. It's really night and day when I switched from a HDD to a SSD. A 128gb SSD and a 1TB HDD should be good enough.
Graphics: GeForce 650 is a bad choice if you want to use your PC for gaming and you have a $1500 budget. I'll go for a GTX 760 or a 270X.
OS: I prefer Windows 7 but YMMV.
Chassis: Personally, I feel that if you're not doing anything extreme like overclocking or SLI graphics, you don't need a brand name chassis. I rather put the money towards a better keyboard or mouse. I just make sure that it has a minimum of 4 fans and enough front USB ports. A SD card reader will be a nice extra.
