Unfortunately the whole job is looking like a disaster in the making....
This is about the most workable way I can think of coming at it, as I don't relish the other proposed alternative of making the document completely in indesign as I can only see that being a bag of hurt further down the line.
I'll have a look at pdf manipulator.
The data doesn't need to go back into filemaker anyway, so just as long as I can generate a pdf form field for each record that'll do