Trying WAY too hard to beat the Shadow Sirens

Shadow Sirens (Goombella Only, No Damage)
Level 3 (10 HP, 5 FP, 9 BP)
Badges: Power Plus P, P-Down, D-Up P
Items: Zess Dynamite, Thunder Bolt
Lead with Goombella
T0: First Strike (Vivian, 3)
T1a: Thunder Bolt (Marilyn, 5), Defend
T1b: Make sure to at least guard Marilyn's clap.
T2a: Headbonk (Beldam, Miss, 2), Appeal
T2b: N/A
T3: Zess Dynamite (KO, KO, KO)
You can already tell from the video, but I got the Power Plus prior. It took me 53 resets to get it alongside an additional 30 to get my Zess Dynamite. And I've been doing resets on Wii U so that's... what, 3 and a half minutes per try?
NOTES
* I got the idea to first strike the Sirens from a reply I got under a Koop video about odd stuff with striking first. The reply wasn't notable, it's just that it brought me back to the video. If the judges find this fishy, well... it's either this or I Superguard Vivian thrice. She never gets commanded by Beldam to Fiery Jinx after all.
* Would have loved to do this fight with less BP, but Damage Dodge P isn't available until just after this fight. Otherwise, I definitely would have ignored the P-Down, D-Up P available here and not bother with Dazzle. Though if I wasn't allowed to Defend on Mario, this would have been level 4 since then I'd have to equip Damage Dodge. Give and take, I guess.
*I forgot to specify at the very end of the video that the action commands that could have been gone without were offense-based.
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