If you're going for max block, Use SS or another high block shield, Spirit requires far too much of an investment in dexterity. Keep in mind that against some melee characters you will not always be able to get away fast enough to avoid being hit i.e. WWSin(Stunlock), BvC, TeleSmiters since you don't have the cast rate of a sorc. Bowzons also can be a problem since you don't really have the tele bombing capabilities of a wind druid.
Also something not touched on yet is FRW, Which is as important (if not more so) than FCR. A lot of dueling with a fire druid is like a trapper and involves positioning, But since you don't quite have the range of lightning sentry you need to move...and quickly. I don't know how much you planned on using Armageddon, But with high FRW it is far more easy to control.
You definitely don't ALWAYS need the 30/30 to be successful, Although against people that stack/sorb you it might help (although depending on how much they use even that might not be enough). Another option is to shop an artisan's tower shield of deflecting from either larzuk or halbu in act 4 and stuff it with 3 fire facets to keep your block up (If you're insanely rich and lucky you could try and find a legit jmod to trade for.)
As far as skills, Thats where fire druids are the most fun, Everyone plays them differently and you have a ton of versatility to mess around with. I'd say make one and find out what setup works for you, Be creative, If you don't like the result, You can always remake.
Here are a couple of setups that people use:
Pure Fire Druid
1-20 Firestorm
1-20 Molten Boulder
20 Fissure
20 Volcano
1-20 Armageddon
0-1 Ravens
1-20 Oak
0-1 Spirit Wolves, Dire, and Bear
ClanIraq's
Shaman (From what I can tell anyway, the guy that made the guide got banned from here and it kind of vanished into the ether)
20 Volcano
20 Fissure
20 Grizzly
20 Molten Boulder
0-1 Armageddon
1 Oak Sage
1 HoW
I'll PM you the link for this, I'm not sure if I can post it here
TheMayor's
Dual Elementalist (Not sure if this actually works, but it definitely looks cool)
20 Cyclone Armor
20 Tornado
20 Fissure
20 Volcano
10+ Hurricane
1 All summons except vines
The Link:
http://forums.diabloii.net/showthread.php?t=587976&highlight=Dual+Elementalist
These are NOT the only options, mess around and you could stumble onto a good build by accident. I'm currently knocking around the idea of a partially synergized cyclone armor and/or a 10 point oak sage. If you're on east Non Ladder I'll duel you once I get my new druid up and running.
