(Disclaimer - I'm in the same situation as you. Doing due dilligence before purchase so, in the time-honored tradition of the blind leading the blind here goes:)

Seems that this forum isn't well monitored. I have some of the same questions that you do. From what I've gleaned here and elsewhere:

Addressing # 3 first:

1  rolling the Egg should always be done by pulling it rather than pushing.

2 there is something called The Nest Handler that makes moving it easier. It's on my list of must haves. Additionally, the casters are apparently available in 3" and 4". The larger caster is more forgiving of pebbles and other irregularities than smaller ones

As for your question #2 - I would not take any chances with CO2 or the danger of setting fire to your garage. Not sure how long it takes for the coals to fully extinguish but embers can lay dormant for a long time. Hopefully someone will address this.

You might also visit these other forums:

http://www.nakedwhiz.com/nwindex.htm - This site is really informative - I've found more information that related to my needs at nakedwhiz than anywhere else.

AND

http://www.bbq-brethren.com/forum/index.php  Q-talk is probably the forum in which to ask. There are a lot of Egg users there too.

So - good luck on your purchase. I'm taking my time. I've been looking at smokers for several years. Had my heart set on a big heavy offset smoker until I saw the Egg being used in a competition on one of the food channels. I also realized that since I live very close to the ocean, steel would require extra maintenance creating an ongoing battle which the salt air would eventually win; second, I don't have space for the kind of offset cooker that I would like (but it's a great excuse to buy a pickup truck) and third, that such a smoker is complete overkill for my current needs (slow cooking pork ribs, shoulders and grilling the occasional tri-tip). Maybe when I'm ready to cook whole hogs. :-)

Also - there are probably other forums - Google is your friend!

Thanks for the info about the coals. I will  keep mine outside but, with a cover. I don't want to repeat a friend's 'cover disaster'. He put the cover back on his gas grill when one of the burners was on low. It takes a long time to remove a melted cover. :-)

Any thoughts about rust prevention? We live on a hill about 3 blocks from the ocean. Great view but, the salt air is a constant battle with any metal, painted surface etc.

My guess is that the nest, handles etc. can be waxed with the same wax I use for the cars but, the hotter areas?

Yno said:

People that have been on the forum for fewer than five years probably not have seen that post, so bumping old posts is not a mortal sin. Granted, there have been other posts in that time that address the same subject, but sometimes opinions change.

If it ever comes time to vote on a moderator  for this forum, my vote will NOT go to #JIC. 

JohnInCarolina said:

Yno said:

People that have been on the forum for fewer than five years probably not have seen that post, so bumping old posts is not a mortal sin. Granted, there have been other posts in that time that address the same subject, but sometimes opinions change.

If it ever comes time to vote on a moderator  for this forum, my vote will NOT go to #JIC. 

Gee, that last part really hurts.

I don’t have a problem with people bumping zombie threads.  I agree with you, sometimes they contain useful info.  My point was more that responding to the OP is probably pointless at this stage.  He/she posted this six years ago, and hasn’t been active here in nearly as many years.