I had a shorty Remus exhaust that was just disgustingly loud when I opened the SV up. Sort of fun in a hooligan way, but could get old. I would definitely do the shocks before the exhaust, especially at your weight. GSXR shocks are, as I said, an easy swap. GSXR 1000's have stiffer springs, so you might look into that. Look up the stock spring rate on the SV and compare it to the stock spring rates on the GSXR's. If I remember correctly, some Kawa shocks also will work on the SV. You can probably get a spring rate recommendation for an aftermarket shock at your weight and then try to get as close as you can with a donor shock. Unless, that is, you want to do it right and get an Ohlins. Then you don't have to worry about all that crap I just said. Lol.
Another issue I had with the SV was the on/off throttle response. After I adjusted the Throttle Position Sensor (TPS), this smoothed out and the bike was much easier to control at low speeds. This is an issue for newer riders, so you might have an experienced rider check it out for you and see if he thinks the TPS might need to be adjusted. There is a good step-by-step with pics for this on SVRider.com