Can you buy empty bottles there? I never got into making potions at all in the main game, so I don't have many empties. BTW- when you use them can you recycle the empty bottle?
I'm probably overworrying, unless the basic monsters in the wastelands are incredably tough, I feel pretty confident about my hack and slashing. Plus I have lots of strength potions for the big ones (although I rarely need them). My strategy so far has been to build up my offense, defense, armor, and damage. It works well till now with a 1 hand sword (damage 122-175, with charm) and the Dragon shield...and that's without the possable gains from the 8 charm slots I have available, or with the 1 hand sword everyone talks about that you can find in the wastelands.
I also have about 60 full and 30 minor restorations, plus 30 super strengths.