I agree, I wouldn't use less than a 6-8 oz for typical hot sauces. NW Elixers, Defcon, lots of companies use the larger bottles. I used the 2oz size when co-packing Incinerator for Candice. But that is NOT a typical hot sauce. That is one of those one-drop sauces.
If you are trying to lay things out for a long term business plan, just start looking at and weighing the options, and there are a LOT of options, and priorities may/will change as things develop.
While the look of a BR may be cool, it really only ties in with the lab look (defcon) or old tyme medicine (NW Elixer) how important is the BR look for a traditional hot sauce? Dunno, that's for you to answer...
While you may LOVE the BR look, you may find that shipping the BR's is more expensive than traditional woozies, and if it doesn't have a significant contribution to your look/brand....is the extra shipping worth it?
And all this is irrelevant if it's all for Christmas gifts for friends and family~~~
Well, Have Fun with it, whatever you end up with.
Lots of options~~~