Are lobs symmetrical on both opening and closing ramps? Think it’d be beneficial to have an asymmetrical lobe that is more aggressive on the opening ramp to give more area under the curve and to allow more charge into the cylinder around max piston speed. The closing ramp must be gentler to allow a smooth stop of the valve hence helping to stay out of valve float.
A second point is that maybe with a head that has good low lift flow may not be in terrible need of aggressive profile lobs.

 

Again it depends on the grind. Some cams open the valve quick and close it quick some open quick hold a while and close quick. some open slow and close slow. It depends on the engine it is going in head flow,bore and stroke,intended use. Valve float and valve bounce are two different things. Bounce is usually not enough spring to control the valve for the ramp. Float is when the lifter and valve is launched out of contact with the cam again not enough spring or poor cam design. The cam makers know what to put on a given cam for a given set up 'cause they do the testing and they generally know what spring to run with a given profile lobe. So like I said let the cam guy set up your cam and valve train.
If ya got big heads ya can run a smaller cam for the same HP level.It doesn't matter where the flow comes from ie- big heads/big cam as long as it can meet the air demands of the engine at a chosen HP level.
Heads and intake are where the power is at so go BIG and let the cam guy, cam it and ya will be pleased.