Not bad but I'd opt for another intake manifold like hte M1 or a ported Street Dominator.

I ran 6.90's in the 1/8th with a 451" low deck Duster running a very similar Lunati 240/250@.050 .520/.547 I shifted about 6300 with 3.91 gears.....those lunati Race Hydraulics have nice lobes, If it's similar ot the old one I doubt you'd really be giving up much to a solid with mild heads even with the steep-ish gears