how fast do you think

Here is my combo which is a little like yours. 1st Strokers don't need a lot of RPM.
340 block
30 over bore J&E flat top pistons
eagle stock lenght H beam rods
W-2 ported head
ported strip dominator manifold
304/304 557 lift mopar cam
Pistons are 18 thousands out of the whole to get 13 to 1 compression
950 Holley
03.79 stroker crank which puts mine at 392 cubic inch
Turbo action tight 4200 convertor
727 torquflite w/trans brake
4:88 gears
ladder bars, frame tied, roll cage in car
11.5x29.5 slicks
car weight 3500 lbs with driver
Best et to day is 10:72 at 125.43 mph
I leave the line at 4200 shift at 5800 and go through the traps around 6500

You should be able to get in high 10's with right suspenion work.