How good could a tall in shape good looking white guy eat down there?
I don't know. My friends who went down there didn't have any trouble. I didn't back in the day, but I'm Brazilian. Just be careful because you might be targeted for robbery, scamming, or tranny hunting. Best thing is to have a connection down there.
Is Brazil really that much better than say DR or Colombia in terms of girls?
I've done a little research, and it seems that Salvador and Recife are cool, although Florianopolis also seems poppin' as well. More into the mixed chicks with phat azzes than the white German/Polish "Brazilian" types, where would you recommend I go?
What part of the country has the best herb?
Asking for herb down there as a tourist is one of the worst things you could ever do. Let it come to you, if it doesn't, don't ask. You WILL get robbed.
Best part of the country might be Rio, but that's a tourist trap. I always recommend going during Carnival and finding a midsize city or town. There, "foreigners" are more rare.
I've been seriously considering opening a brothel there. You think it's worth it?
No unless you have some muscle. The bandidos ain't going to like that very much.