Unless you do it first, you shouldn't be allowed to come up with new element names. Flat spins usually enter turns (step up under flips that don't step up for context)
Looks fine, but B&M just sort of sucks. Outside of Montu, they have nothing in my top 25 (kumba, Mako, candymobium, Medusa sfdk all missed out after some tips this summer)
Also the rattles get worse at least on Emporer and Mild Eagle from year to year. Even on middle seats, Iron Meanace had many obvious jolts.
Should be a pretty Mid 1 and done type credit much like most non-invert B&Ms