The BR1000IN - 600W could be enough else there is BR1500IN - 865W.

Both have USB connectivity for monitoring & can shut down as per settings via Powerchute. Also u can even add external battery packs (cost almost as much as a new unit ) to extend battery time

@Arun - Hows the AOC F22 ?? Thinking about getting it. Cant decide if Samsung 2233 / F22. How much is it?