I'm going to say Low 10's....possibly better with good air. Your combo looks like it will be putting out about the same power as my 408, except your truck is a little lighter and you are running a 904, which is going to be faster than my 727 any day. Once the combo is sorted out, that thing should boogie.
Also, I can confirm, if I don't get my engine hot enough (using e85) it will stumble off the line. ~180°F is best (can be a little lower, but not much).