Riderman, Finally 8-Star Awakened

In the currently ongoing event『Riderman Roulette Event Revival』, I've finally managed to get Riderman's awakening level from ☆7 to ☆8... ...Honestly, my pace is a bit slow. Possible reasons include: ・Starting with ☆6 or ☆7 (probably ☆6?) ・Still having only a 60% special attack rate ・Consuming only the minimum amount of stamina (saving it to recover from the stamina spent during the ranking event) ・Also dabbling in the two seasons of the simultaneously held『Sealed Zone』event (the deadline is approaching, even though there's still time) ・Entering a 'guaranteed mode' (where the 8-space bingo sheet can't be completed even after 25 roulette spins) With only about a week left until the event ends, and a new roulette event starting tomorrow, I have a feeling my progress will slow down even further... So, at the very least, I've started using stamina items. I'd love to aim for max awakening (☆10), but will I make it in time...?