Perfect riseball spin would be 6-12 and like maximum achievable internal rotation (ball facing sky at 9) close may be good enough. As posted earlier a high fastball is not a riseball. A riseball requires "backspin" to keep it elevated longer, not "jump".
And for what it is worth, in my experience anyway, typically a pitcher would be a riseball pitcher that throws a drop or a dropball pitcher that throws the odd rise (read high fastball here). Normally a pitcher would not excel at both (there are anomalies - I am being general here). And mediocre of both will get hit a long way. I suggest you find which your DD excels at and perfect that pitch while "working" on others. Change of speed of all pitches is more important than developing 7 pitches. Just my $0.02
And for what it is worth, in my experience anyway, typically a pitcher would be a riseball pitcher that throws a drop or a dropball pitcher that throws the odd rise (read high fastball here). Normally a pitcher would not excel at both (there are anomalies - I am being general here). And mediocre of both will get hit a long way. I suggest you find which your DD excels at and perfect that pitch while "working" on others. Change of speed of all pitches is more important than developing 7 pitches. Just my $0.02