I went ahead and used the 8" round pans with the 8" dome pan, and it came out pretty good. I was so nervous when it came time to cover with fondant so instead of covering the cake the traditional way, I “wrapped” the fondant around the cake. Much easier.
Here’s the actual cake http://instagram.com/p/smzNcTvtFG/?modal=true
And here’s a quick photo tutorial http://instagram.com/p/smzNcTvtFG/?modal=true
Thanks for all the tips and advice everyone :-)