Hey alien Dan, nice to see you in these murky waters!
A couple of things to note and Hollow will chime in I'm sure, good QT/TT as you know is worth more than not racing.
But in some of the dailies the QT/TT don't mean a thing once you get racing.
To answer you question your DR isn't affected but SR is. Bare that in mind.
On B and C things get a little more spicy at your pace mate...the first few won't be fun. Sure you are fast but once those lines get taken away and guys just as quick aren't doing TT because they prefer to race...just be prepared.
Even starting out front it's a difficult thing to manage the race but...
That's the fun part. I will guarantee you run away for a few races and then it's like oh my god....in a fun/frustrating way