I have about the same amount of miles on my 7.3. Get Ergons right away! You will wonder how you lasted this long! I got the cheap-ish Ergon GP-1's and they made a world of difference. I've considered a trekking bar, and the GP-1's should fit on it should I go that route.
Still have the stock saddle. It's not the most comfortable thing in the world, but I get a long. Pedals and shoes will most likely be my next investment.