325 Racer,
Just checked out the Lamere 29+ full suspension bike, and it looks like the rear end is 177, not Boost 148. Maybe you saw that already.
I haven't seen a full suspension 29+ bike besides the Lamere and the Lenz (Behemoth or Fatillac, can't remember which). If you find a chinese full suspension frame with Boost 148 that will allow a 29+, please let us know.
Either way, let us know what you build up for your dad.