The auto-hinge is standard on the new Infinity model, which is the one I got. However, if you were buying another model, I would say yes. This is not a light weight product and the dome would be quite heavy without the hinge.
As far as essential accessories, I would make sure to get 2 of the double decker racks (for more cooking surface) as well as a pizza stone. The pizza stone, aside from making pizza, makes a great heat deflector. You can take the pizza stone and place it on an upside down double decker rack, that can hang beneath the grilling surface. This way, you can cook low and slow without direct heat from the charcoal or wood below. You'll also want to get the temperature guage, and the metal top (damper). Personally, I think both of those items should be included, but they are just a little extra and are essential to proper temperature control.
I also bought a table, but you could also get a cradle, or make your own table. While you could cook on the ground, you probably won't want to, plus you'll want to make sure there is no danger of someone knocking over your grill. It's heavy duty, but it is ceramic all the same. hth.
As far as essential accessories, I would make sure to get 2 of the double decker racks (for more cooking surface) as well as a pizza stone. The pizza stone, aside from making pizza, makes a great heat deflector. You can take the pizza stone and place it on an upside down double decker rack, that can hang beneath the grilling surface. This way, you can cook low and slow without direct heat from the charcoal or wood below. You'll also want to get the temperature guage, and the metal top (damper). Personally, I think both of those items should be included, but they are just a little extra and are essential to proper temperature control.
I also bought a table, but you could also get a cradle, or make your own table. While you could cook on the ground, you probably won't want to, plus you'll want to make sure there is no danger of someone knocking over your grill. It's heavy duty, but it is ceramic all the same. hth.