I would like to send my son to Gymasium in Frankfurt.  We are living outskirt of Frankfurt.  Here in Hessen, parent can decide what sort of school form for his or her son.  

Here are the Questions:
1.G8 or G9.  The school I want to send my son is under G8 programme.  Is it so intensive for the children to study under G8.  The school’s unterrichtseinheiten is 65 minutes!
Now in the afternoon he learns Piano, Violin, in Chor, swimming and Kendo.  He is currently in the school whole day, doing Schülerzeitung, in Schulband and Orchestra.  He gave up Football last year coz it took a lot of time.
Can he still continue his activity in year 5??

2. Schwerpunkt and  zweige
Most parents prefer to send children to Naturwissenschaftliches gymnasium. Is it early to decide for children at this age??

3. Altsprachliches gymnasium
My prefer choice is Altsprachliches gymnasium.  Has anyone experienced this sort of school?  Latein is compulsory from year 5th, Alt-Griechisch is possible.

4. Erste/ zweite fremdsprache
Französisch is it recommended?  I have friends who force their children to learn French in year 3 in order to get a place in Gymasium.

5. Aufnahmeverfahren
How the school decide on children?  Since the Noten isnot included in the Formular.  The child will become a place in one of the 3 choices??  
We are not living in Frankfurt, so I guess priority will be given first to students in Frankfurt, children who have older siblings in the school.
How does it go in general?  I know that Schulamt will decide on schoolform (but not on particular school) if his choices of school don’t have enough places.

PS.  Sorry to type in English naka.  And thank y for all the answers.