Revit :: Approach For Large Scale Housing Masterplan Model

We're putting together a large scale (2000+) development of various housing types. These are modular units, and there is a lot of repetition (obviously). In all there are probably 6 main types, each of which has mirrored alternatives. Whilst the houses are identical, the individual plots do vary to respond to topography and the infrastrucural layout.
 
What is the best way of organising this in Revit ?Ideally we would like to schedule the types, walls, roofs as well as the ground works for each. I am not sure what the best approach to this will be.
 
Initially I had tried setting up a few house types as 'groups' then using individual building pads for each plot - this does not lend itself to scheduling overall numbers though.
 
I had also thought about modelling the house types as a separate file, and linking them into the masterplan, duplicating as necessary (not sure how this will work re. mirroring though). The level of detail needed in the masterplan isn't as detailed, so long as the external / internal plan is visually correct (annotations and drawings for individual houses can be kept in the relevant house type Revit file).
 
I'm still not sure that the linked model approach will allow scheduling though ?
 
We would really want to schedule the numbers of overall house types, as well as totals for materials (although that could be extrapolated from number of plots * materials for each type).I'm also concerned over file size and performance. 2000+ houses in the single model is likely to be a pretty big hit.