RMC better than Sparkle?

I haven't unlocked RMC yet, I'm just plodding through the story at my own pace. I don't have a Robin so I play double hyperspeed adv forward, with sparkle and Sunday and atk boots.

It works well and I enjoy it but I'm wondering if I should be spending my fuel preparing for RMC as a replacement for sparkle in this team, the buffs seem better with RMC but I'm worried about SP because I'm already cutting the SP pretty close even with sparkles ult.

Does anyone else use this team?