Mega Rush Manip

I need to get 2 Mega Rush drops from the two fights in the sub-level 2 sewer room. Mega Rushes, in this scenario, can only be dropped from Hammer Bros. There are two fights, one with a Hammer Bro and a Goomba/Hammer Bro/Magikoopa, and one with a Magikoopa and a Goomba/Hammer Bro. For XP routing, I need the first fight to have either 2 Hammer Bros or one Hammer Bro and one Magikoopa. The second fight always has a Magikoopa, so to get Mega Rush I need the second enemy to be a Hammer Bro.

There are two ways to get the badge to drop. The first is manipulating enemies to "hold" the badge in battle. In doing so, the badge will have a very high likelihood of dropping after the battle. The likelihood for a badge being held in battle is about 1 in 200.

Alternatively, I could try to get the Mega Rush to randomly drop after battle without it being held. The issue is twofold. One, the random chance is a smaller 1 in 300 chance. Also, random drops only reference the item pool of the enemy that is left-most in battle. This means that I cannot get a Mega Rush to randomly drop without being held during the second fight (the one that always contains a Magikoopa) because the Magikoopa is always the left-most enemy.

Therefore the only two scenarios that I can effectively use would be to manipulate both battles to hold the badge, OR for the Magikoopa fight to have a held Mega Rush and then manipulate a random Mega Rush drop from the first battle.

I'm not sure which of the two scenarios will end up being the fastest realistically. Though it may be a 1 in 300 chance of a Mega Rush randomly dropping from a battle, I also need the Gale Force to successfully blow away both enemies, which is a 13.7% chance. Multiply those chances together and the chance to successfully get an outcome which satisfies both the Gale Force requirement and the random drop requirement is about 1 in 2000.