First time builder looking for help

Case: Antec 902
PSU: Corsair TX650, TX 750 recommended

I think you should also make some changes in your existing list, like this:

HDD: Western Digital cavair green 1TB
GPU: Nvidia geforce GTX 460

If you are short on budget, change i7 2600k to i5 2500k (i7 is better) and getting a SSD is of no use until you are using your pc for some exclusive and stand alone work. As for CPU cooler, until and unless you are overclocking, aftermarket cooler isn't recommended, you can put up with stock heatsink, however if you are getting one, get corsair h70, I don't have any experience in installation but I think it isn't much difficult to assemble a PC, you can take help of any good mechanic.

Even if you're *not* short on budget, you should go 2500K. The 2600K is barely better and much more expensive.
http://www.tomshardware.co.uk/best-gaming-cpu,review-32...
Of course he's overclocking! He's getting an intel K!
You certainly don't need 750 for one 6850. 600 would be fine.
An SSD will improve load times and stuff like that; get it if you can afford it.
It's easy to assemble a PC. Just read the instructions.

Thanks for input. Actually for my needs, I'm not going to overclock too much. I got the solid state and processor as part of an accommodation discount for working at best buy... got the 2600k and solid state for 260 total. As for the cooler I was really just wondering if it will prolong the life of my stuff and how much maintenance if required to use it.

If you do not overclock then there is no need for the cooler. Just invest good in the case and let the good "Chee" flow through the case!  

the 2600k is far better than i5, here i5 is i five only, not seven. The i7 supports hyper threading and if you are playing fsx, without even overclocking, you can use affinity mask = 255 tweak to get another ten-fifteen FPS. The 2600k, will then use 8 cores, deadly performance :-D