I think we too will choose a mix of grammar and ind. Its good to know that its not unusual to sit at least 4-5 exams should it be required!
I am mentally preparing my dd - at the moment, most the grammars are in the same week
she is going to be exhausted. Will will be doing our best to keep her spirits bouyant.
Number of tests is not as much a problem as the spread of these tests. Last year, 4 tests would be over a period of 3 months between September to November for Grammars. Indies are all clustered in early January.
This year, Grammars tests are very close to each other. Some parents enter their children for all the available tests from Slough to Sutton and more. This year, such practice would make children very exhausted at the best. At worse, they might get too stressed and severely under perform at the key test (Tiffins for example as that is the last one in September). However, parents know their child best and would have to see what they could do.