i'd really suggest 4.10's instead of 3.73's for a daily driver, let alone for towing.
I second this. 3.73 gear and 32" tire is about the same as stock tires and 3.42 gears. 4.10's and 32 inches of tire equates to a factory 3.73 gear/tire combo.
By my standards, this creates the bare minimum final drive ratio for a truck that works by hauling or towing.
If you're going to change gears, make it worth it.
Looking at cams:
Do you want to pick a cam that:
Exceeds the amount of air/fuel your TBI & fuel system can supply?
Exceeds the RPM limit of the breathing capability of your intake manifold?
Starts making power above the stall rating of your torque converter?
Is mismatched to your static compression ratio?
Probably not (times 4).
Logically this means you'll want to stick with something that is warmer than stock, but not so hot that you have change parts in all these other systems to be able have the cam swap make sense [cents]. Right?
Regarding the cams you posted.
The 1101 is arguably too small. The 1103 is definitely too big. Sure, there is this old rule of thumb that you can run a cam up to 218° intake duration on a stock torque converter, but why. If you have to run a summit cam, look at the 1102. It's your basic "RV" cam, with 204°/214° duration at .050". Every cam company sells or used to sell this cam.
There are better options. But, if all you're looking for is a basic summit branded cam, the 1102 is the one you should want.