Custom Exhaust for S50

[X2theZ3]

My plan is to run 2.25 pipes from the headers to
dual magnaflow cats to a dual in dual out muffler.

Here's the pieces I'm thinking about using.

https://www.justmagnaflow.com/cgi-bin/shopper.exe?preadd=action&key=CARK54305

https://www.justmagnaflow.com/cgi-bin/shopper.exe?preadd=action&key=CARS14278

Let me know what you guys think?
Also, is there any place that I can get the cats cheaper?

Thanks.