It all depends on your point of view. If you just want some better looking (to you) pipes and some more sound and never anything else, then the vic download is the easiest solution. Dealer prices are between $700 - $1000 for turnkey deal; pipes, high flow airfilter, stage 1 download, labor.
A more flexible option with slightly more power is an S&S package. For your 07, an S&S airbox and the 2005 Hammer download with pipes will be about the same money but deliver more power and get rid on the ugly stock airbox. You'll need to find a Vic dealer that also sells S&S packages.
Option #3 is as others have suggested, either a K&N filter and open cover for the stock airbox, or a different airbox (S&S or PMRT) along with the VFC III fuel controller.
This setup is slightly more cost on the front end, but will deliver the most bang for the buck in terms of power and flexibility. It allows you to make future changes (pipes, airbox, cams, engine work, etc.) and then re-tune the VFC to match the new specs. No dealer visit required unless your dealer has a good tech that knows how to use a dyno.
Now, for your choice of pipes, the swept design looks good but I've heard Kevinx on more than one occasion mention they deliver the least power. Also, of the 3 or 4 people I know that had them, they always end up dragging the end on the lower pipe on the pavement in a hard RH turn, so the pipes get bent and scraped pretty quickly.
A better option might be the Vic shotguns with a set of Thunder Monster baffles. Looks good, sounds good, and provides good power. They have been recently discontinued so you can usually find new sets either chrome or black for about $250 on ebay. Couple that with an S&S package and I think you'll be very happy.