cam help

70 duster 340 30over dome top pistons I have a x-cel intake and a torker 340 match to the heads, heads are j 240@500and 140@500,I have 15/8 headers and some 17/8 headers carb id a 950hp 727trans rev patt. 91/2 dyn verta 4800/5000 and 4.56 gears with 2735/10.5 qtp 8gal fuel cell ss springs and mp drag shocks on back 90/10 up front......I plan to drive the car on the street I thought about a hyd but not to sure my go back to a soild..had com in it 306 555/555 think that the dura. is a little to much..had 185cy pres in it before.....what cam would you guys rec....hyd or soild and why.......also have 1.5roller rockers:toothy10: