We have a power awning and I like it. Very quick and handy. I'd buy it again. I have had a manual awning in the past but eventually never used it because taking it down and putting back up several times a trip became a hassle.
Get the power jack and spare tire.
I think they all come with a water purifier as a "standard" option.
The double door fridge and alum wheels are just for show and is personal preference.
Storm windows might sound nice, but you might not be able to open them like the regular windows - check up on that because I'm not sure. Personally, I wouldn't get storm windows in a hybrid, though.
The oven is something people use a lot or not at all. They work solely on propane so you can use it dry camping (i.e., without hookups).
The gas grill is just "ok". Depends on how picky you are. I use it occasionally, but prefer to bring along a better grill or to cook over the fire.
Decide how often you will camp dry. Your AC will not be available unless you also invest in a fairly large generator (extra $$ for a quiet Honda or Yamaha) and are in a park that allows them or has hours in which to run the genny. This might also be an issue with the heated holding tanks. Not sure because we don't have them but you should check if they run on DC.
Speaking of DC; consider getting two batteries instead of one. These are purchased through the dealer and not the factory and you should search this forum to learn about the 12-volt world. Here's a good place to start - 12-volt side of life