Timing Question???????

With my engine set up as below...

302 block bore to 306
hydraulic rollers
1.7 RR's
B303 cam
RPM performer heads
RPM performer intake
MAC shorty headers
MAC H pipe
MAC mufflers (dont know what model but they are VERY loud)
holley 750 DP
MSD 6AL ignition.
4:10 gears
HD T5 tranny

What should I have my timing set at??

Thanks!!!