You will not see the true benifits of a cam swap until you swap out the heads, the stock cam can actually work very well. The B303 is very old tech, and really was intended for a carb car in it's day... All the alphabet cams are out fo date compared to the newer technology.
There is not timing retard and with your mods you truly shouldn't need a chip, the gains will be very minimal.
The Crane 444225 works very well with a stock style head and aftermarket intake NA, however it is really designed around a 1.7 ratio rocker, the TFS Stage 1would also be a decent choice. However if I was going to spend around $300 on a cam, custom would be what I would do.
You do not want the 130092 it is actually based on the old 302 firing order, not the H.O which is preffered.