Okay, I'd replace the rear sprocket with a Supersprox and replace the chain with an EK, Honestly, I'd leave the front... I'm willing to bet that the front will spec out as new considering the bike and it's stated use. Under $200 shipped.
http://www.solomotoparts.com/product...0&cat=0&page=2
http://www.solomotoparts.com/product...cat=318&page=1
Or you can get the entire kit from them for $239 and it will come with a lifetime defect warranty and a 2 year wear out warranty.
http://www.supersproxusa.com/products.php?cat=1764
Or you can go cheap...less than $120. Chain comes in 4 colors, red, blue, green, or gold. I've dealt with these guys before and they are okay. In fact, here's another 15% just because we're dogs! D2M2008 which makes the whole shooting match about $96 including shipping. The sprockets are steel JTs which are decent IMHO and the chain is Tsubaki I believe which should be okay for an SV driven for commuting.
http://www.d2moto.com/p-8273-525-o-r...inks-gold.aspx
http://www.d2moto.com/p-7886-jt-525-...1999-2008.aspx
http://www.d2moto.com/p-7057-jt-525-...650-sv650.aspx