I know where your comin from TC, but did you read this
Have a read of this its interesting...
http://www.audi-sport.net/vb/showthread.php?t=72956
I read this post and tend to agree that the exhaust especially on the Ed 30 works pretty well especially if you gauge the huge step you get just on a re-map on stage 1.
The HPFP will certainly help in the mid range from what I have seen and the icing on the cake will be the exhaust.
I'm going down the same road this Thursday at Awesome. I 've got APR Stage 1 with absolutely nothing else done. I've even got a stock filter in the air box but I will be interested to see the result on the dyno as I will be going to their stage 1 high flow fuel pump map. They have tailored a map around the APR fuel pump which come's free.
I'd rather save the money on paying for the exhaust and put it towards brakes. I reckon from my recent track work that the gains I'd see on the dyno for just the exhaust going onto stage 2 would be marginal on lap times.
Hopefully I will get most of this posted on here for comparison for people who don't necessary want to change their exhausts at this stage of tuning.