What real difference does the lsa on a cam make?

Alrighty, what would you recommend for my combo? It's a 96 5.2 Magnum, stock Magnum heads with some slight porting, an air gap intake, 600cfm carb, duel 2 1/4 pipes out the back, built 904 with 25-2800 stall converter, possibly 100 shot of the bottle down the road.. The specs I was thinking were 224 duration at .050 lift and .496 lift with the 1.6 rocker arm. And lsa around 112.