Motorman

I have a 1993 ford F150 4X4 4.9L. I wanted to know how much of a upgrade cam I can install before it messes with the EMC. I have a high flow exhoust, a twin 60 mm throttle body, a jet pro chip and 17lb/pr.hr. injectors. Less than 20K on the motor
I was thinking this cam.

Comp Cams Hydraulic Flat Tappet, Advertised Duration 260/260, Lift .447/.447 lobe separation 110 Degrees RPM range 1K-5K

Or even better this cam.

Crane Cams Hydraulic Flat Tappet, Advertised Duration 272/284, Lift .487/.515 lobe separation 112 Degrees RPM range 2K-5.5K

Any body try camming this motor with the fuel injection installed?
Any body know if the computer can handle it or do I have to do a carb conversion?
Also with either cam will the rocker arms punch the valve cover since it has a low spot for the intake?

Thanks for any help.