You are wise to step back and do some research before buying the first truck you see. You'll be spending upwards of $45-50,000, and you should get exactly what you want, even if that means ordering one and waiting or buying out of state. My Limited has nearly all the options, and that makes it a totally different animal than a Rebel. Choosing individual options usually boils down to personal preference. So you can take my opinions with a grain of salt.
eTorque V-8 -- I thought I wanted the eTorque until I drove an eTorque and a regular Hemi V-8 back to back. I thought the regular V-8 was more responsive than the eTorque. This might have been an issue that was specific to the particular eTorque truck I drove, and not a characteristic of all eTorques. But another thing I noticed was that the eTorque has Start-Stop, whereas the regular V-8 does not. I had a Jeep Cherokee with Start-Stop, and I was always turning it off or cursing when the engine shut off because I forgot to turn Stop-Start off. I figured that even though the eTorque is supposed to improve the transition when restarting the engine, I'd probably be turning it off most of the time anyway. So getting the eTorque seemed not a good idea to me. I have the regular V-8 in my truck, and I sure don't miss the Start-Stop at all. Not to mention the extra $1300 for the eTorque.
Rambox -- I wasn't sure at first I wanted them, but now that I have them, they are really useful for storing a bunch of stuff I'd rather not have cluttering up my back seat area. They have lots of uses, including secure rifle storage and even as a cooler. Definitely a nice option to have. One drawback of the Rambox is that you'll need a tonneau designed to fit the RamBox, which will reduce your tonneau options. Also, if you go with one of those hard covers that lifts up in the rear, you'll have to open that cover every time you want to access the RamBox. I'd think that would get old real fast.
Bed Utility Group -- Regardless of whether you choose the RamBox or not, you might want to consider the Bed Utility Group (BUG). That option should give you the bed rails and bed lights, and maybe even the bed divider. (You should probably check exactly what you get with the BUG on the Rebel, as BUG options vary between models.)
12-inch Screen -- The 12-inch screen is impressive. It is one of the features that makes the Ram stand out from the competition. If you show off the truck to your friends, they're going to notice that 12-inch screen. I don't find that soft (screen-based) controls are hard to use or annoying, but then I've had them on my Mopars since 2012. Those vehicles all had the 8.4 Nav UConnects, and the 12-inch screen is a step above. I absolutely love the 360-view on my Limited, but I don't think that option is available on the Rebel.
Air Suspension -- Again, this is a feature that makes Ram stand out. The quiet and smooth ride is what attracted me to the new Ram, and the air suspension is a contributing factor to that ride. With the Rebel's aggressive tires, some of that quietness may be sacrificed. But the Air Suspension will still give you some adjustability height-wise that you wouldn't have with the standard suspension.
Other Options -- Read around on this forum about the Rebel 12 and Level 2 packages. You may want the features in either or both of those packages. The power-folding mirrors are included in the Level 1 or 2 packages; however, if you add the Trailer Tow Group, you will lose the power-folding mirrors. There are quite a few complaints on this forum from folks who are not happy they don't have the power-folding mirrors. If you're going to tow a trailer, just order the Trailer Brake Control as a separate option. The Class IV hitch is standard on the Rebel.
Again, all this is just my opinion. Your tastes may vary.
