Is this a good set-up for the Intel Core i5 3570K?

Hello,

I am trying to update a 3-year-old desktop to make it snappy enough to run Adobe Creative Suite (Illustrator, Photoshop, and InDesign...none of the video editing software) for my wife's graphic design work.

I wanted to limit my expenses to $500-$600, but I'd like to buy powerful enough components that my wife can comfortably use this computer for 3 years before we need to upgrade.

I thought about getting an AMD FX card and using the savings to get a better GPU. But after countless hours of research, I have decided that an Intel Core i5 processor would give more longevity and power.

So, I am planning to buy the following:

EVGA 01G-P3-1556-KR GeForce GTX 550 Ti (Fermi) FPB 1GB 192-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

Intel Core i5 3570k

ASRock Z77 Extreme4 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard



Questions:

1.) Is the graphics card too weak for the CPU? Will it bottleneck it? Is there a graphics card for ~$150 that'll pair well with this CPU?

2.) If I need to have a better GPU, then I'll need to get a cheaper CPU. If I need a $200+ dollar GPU, that's going to put more in the i3 or AMD FX range. Is that okay for a rig that needs to last about 3 years?

3.) Would it be better to get a cheaper AMD chip (FX 4100 or 8120) and put the savings into a $250 graphics card?


Sorry for so many questions. I just don't want to spend $500-600 and make a stupid purchase.

--Micah