valve springs

My dad has the Trick Flow 190 heads that have the following valve springs. He went with this option so he could get the 10 degree retainers.

1.550” O.D. Dual Spring (TFS-16094-16)
138 lbs. @ 1.950” Installed Height
430 lbs. @ 1.250” Open
420 lbs./inch Rate
.680” Maximum Valve Lift

He is wanting to use a Mopar Performance .590/.590 camshaft. Are these springs to much for a mechanical flat tappet and if so what kind of spring pressure do you guys like to use with your mechanical flat tappet cams? He will be using 1.6 rockers if that makes a difference. Engine is a race only engine that won't see more than 6500 rpm.