I would like to keep it under 500 dollars.

 

Then you're just doing the BBK since that seems to be what you have your mind set on. With that kind of money (If you do the CW kit) you would also be able to change to DRZ valve springs (double spring as opposed to stock single) and a DRZ base gasket (single layer as opposed to triple layer). The valve springs will safely allow the use of an aftermarket CDI and the base gasket will increase compression.
Here's a thought as well... Drze Kits - SuzukiCentral

 

I dont have my heart set on the bbk kit i have never heard of it i want the athena 435 kit and some other stuff so if i get the athena 435 kit what other mods should i get thanks.

 

see above:
If you get the CW kit instead of the Athena kit you should save 100-150 bucks. While you have it apart install the single layer base gasket, DID cam chain and DRZ valve springs.
The next easy mod would be a CDI. That's plug and play and will allow you about 800-1000 more rpms out of your engine. Not recommended without the upgraded valve springs.

 

is the cw kit a bore kit or is it like the athena 435 kit and would hot cams be a good thing to get thanks

 

just like the athena.....supposedly the Athena has bigger water jackets and allows more water to circulate then stock but that's it. I've never overheated.
Piston, jug, gasket kit.
I have cw kit and hot cams (and a bunch of other stuff) and it's a decent set-up. There are better cams out there but I don't really know much about cams. I got a good deal on a used set so that's the direction I went.

 

i will look at the cw kit if its just like the athena were would you buy it from.

 

Featured Products - Advantage Cycle LC - Indianola, Iowa
Great place to do business with.

 

So that is just like the athena 435 kit do you know if its realible

 

I'm done.