Congratulations ! No real problems with the 650's. Nothing much to add to what's already been said..You don't say what model you have, but with only 2000 miles I, too, suggest make your first mod the £17 (approx) front mudguard extender, probably screwed/bolted on (as opposed to glueing - mine fell off after 40 miles or so!) saves crudding and premature rusting of Your nuts and precious parts!
If you get buffeting (some do, some don't) try the cheapest mod first, which is washers to tilt the screen back (plenty stuff on this forum about that and related mods). Just fill er up and have fun!