I haven't worried about the "feeding thing" much myself when choosing schools for my kids. For me it's more about getting the match right... right kinder/school for each child at the right time.
Same here. My DS1 went to a great Kinder, he was the only one in his group to got the school we chose. The school we chose does have a secondary school that he would normally transition to, I wil be making my decision in the next two years so I can figure out what his strengths are, if that makes sense.
When the schools in your area have open days, go to them. They would be doing that about now.
Zoning will effect you if you are going state school and perhaps catholic. If you choose independant, it will most likely be select entry, as in a interview, perhaps a test for your little one.
When I took m DS1 too kinder I would listen to all the other parents converations about the school they chose, then investigate myself.