I looked online for general Adult Birthday themes/party ideas.
Between what has been mentioned on here and what is online, here are my thoughts:
Pig Roast - can't find a pig and shipping is too much.
Hawaiian Luau - not bad, good food ideas, but it'll be Nov (weekend before T-giving)..not exactly luau time. And, he's never been to hawaii or crazy about it (he'd rather be in the mountains). Still not a bad idea though. It'd be fun! And we can give everyone Lei's.
Margaritaville theme - similar to the Hawaiiam Luau (same foods), but he likes margaritas and Jimmy Buffett more than Hawaii.
Octoberfest - Oct - Nov...what's the difference. ha ha Maybe call it Novemberfest.
He likes beer, we brew our own (when we can) and it'd work.
Farm theme (a little more focused than a western theme) - beef, chicken, etc. Goat would be nice (tasty!). Have a cake that has chickens on it or something. Tell everyone to dress is jeans and flannel or something similar. (we do live in SoCal! Farms are common around here!)
Any other ideas are greatly appreciated!