Might want to go back and read the post that this was about....the statement was about the total weapons paths, not just one or two trials in one path.
As for the mobs used....there are flans below 80 that could be used if one wanted to give them a shot by days or when fire was popping and such, in zones that can get fire weather. Same with the Manticores--a ton of them in the Cape in a perfect level range, and it was not uncommon for me to find others there slaughtering them that would team up when I made my weapons.
Also... keep in mind if earth/wind weather is popping a lot, you can still sell those and flip them to flame--they frequently hit 20k each on my server. Granted, it's not a perfect 1:1 exchange, but it's not a complete loss if you get a lot of soil/breeze.