Potential problems:
* noise/heat when running
* cost of lamp replacements
* minimum focus distance (as that's not a short throw, although it may be short enough)

None of those are definite problems with that model or your use, but they're issues to look into. If the last turns out to be an issue, take a look at models specifically designated as "short throw" which are intended for use in a small space and relatively close to the projection screen (they're often quieter/cooler for use in small conference rooms, as well.)