Honestly? It might not be enough.
I did a bit of math: Assuming 300 stamina cap (around level 47), 150 full peronamin (or 100 full and 100 half), 100% stamina usage (which is unrealistic), and 0 bouquet from cases / bonuses (also unrealistic), you'd need around 230 bouquet per 300 stamina cap to just barely reach 50k bouquet in two weeks.
Being a higher level or having more peronamin will obviously help a bit. But, I'm seeing a rate much much lower than 230 B per 300 S, so I'm thinking it's not going to happen for the vast majority of people, even those who saved coli items.
EDIT: For comparison, I also did the same math for a 320 stamina cap, all other things being equal. You'd need ~235 bouquet per 320, or ~220 per 300. That's not a great improvement from level alone, and still well above the actual bouquet results I'm seeing.