Cam shaft suggestions

Do all the aforementioned first. Then if you decide on a cam regrind:
Oregon Grind #1006
203/208 @ .050
260/264 @ .006
.410/.425 lift
110 LSA but have the LSA set on the tightest your core will allow, which will probably be a 109 if you have a 111 LSA core.
Ken recommends this grind more often than not for towing applications.