You will probably have to turn down the settings a lot on Crysis (From what I hear it has high requirements but I've never owned the game).
It looks as if you are building a budget system.
Good choice on the new HD4670 graphics card.
Have you considered getting a 790GX motherboard instead like these.
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010200022%20107191003%201071942103&name=AMD%20790GX
One thing good about these motherboards is that they have the new 750 SB plus later on you could run 2 HD 4670 cards in crossfire later on unlike that ECS board.Also many of these 790GX motherboards should support the upcoming AM2+ 3.0Ghz and 2.8 Ghz Deneb CPU's (These are not the later AM3 Phenom FX CPU's) should you decide to later upgrade your CPU.
I like having that ability even if I decide later on that upgrading is not cost effective because the possibility is open on CPU upgrades and upgrading could be worthwhile.
When building a new system I tend never to skimp on getting a better quality reliable motherboard (It's good to read reviews before buying) and a good reliable power supply.The case doesn't have to be expensive but it has to have decent airflow and allow for multiple air cooling fans.
It's great to have a reliable system with good components.I would recommend a reliable quality 650 watt power supply even if you don't need it now.That way you would have plenty of power in case you wanted a higher TDP CPU or decided to get a 790GX board and run 2 HD4670 cards in crossfire for higher frame rates.
You might also consider this CPU instead for a little more cash.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103773
Myself I would spend a little more money.
Also I like this hard drive better.
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136218
Going for a inexpensive or even used CRT is fine.
You can pick up a used 17 inch CRT for around $25 to $35 from a computer surplus store.Many people are getting rid of them so it's quite possible to also get one for free from a neighbor or a friend.