Optimally THEORY would say you want to open the intake as soon as possible @ TDC on the Int. Stroke an hold it open as long as possible until BDC and allow BOOST to fill the cylinders. NO OVERLAP at all and also open the exhaust as soon as possible @ BDC and hold it open until the piston has reached TDC on the ex stroke.
I wouldn't even try to guess what the numbers for that kind of cam would be.
I wont Guess, I'll give you the numbers on that cam. As you will see that cam would Suck
As you described it that cam would have a
90* LSA and 180* duration seat to seat.
For .050 duration numbers you need to subtract the number of degrees it takes a cam to get to its .050 numbers. With some Typical ramps thats about 60* to 65* When Added up, Both Exhaust and Intake
Lets use 60* to for a duration advantage. The numbers for same cam at .050 are
90* LSA 120* dur.@ .050
If we move the .050 numbers to TDC and BDC then the cams specs at .050 would be
90* LSA 180* @ .050 240* seat to seat.
Im just giving you the numbers, I know you just stated in THEORY mike
As you will see that cam would Suck 
mike
