Couple questions about cam/springs

Looking at some of the offerings from oregon cams, and i came across grind number 1408,
http://www.oregoncamshaft.com/Hydraulic-Rol-Cam-Specs.html

1st question is this a regrind number or new core number? (magnum roller cam)

2nd ill be running with 1.8 rockers giving me .540 lift, is this doable with the hughes 1110 springs and their retainers that give additional guide clearance?

Heads are stock ported magnums, 1121g head gaskets, stock magnum bottom end with new rings / bearings, m1 single plane, holley 750vs, 1-3/4" long tubes, 5 spd, 3.55 gear, and i do plan on between 100-150 shot.

Any advice is appreciated.