Depends. If he wants to get back to farming and leveling, he should move on, and just hit up the Level 100s on pages 6 and 7. If he doesn't have too much farming to do, he can do that. But honestly, level 20 manyus would be easier to get from Sunday/Wednesday dailies or SGs while farming, I wouldn't bother wasting time on the sheet if he's already got the bloom, unless he actually needs the seeds and coins too. Chance of getting those manyus with the seeds and coins around is awfully low.
As for me, I got the 1st page in about 10, the 2nd page took until roll 49 lol. 3rd page took 12 pulls.