the 2x4 table should be big enough if you go with the SOG growing method, there are some tutorials around the web that are informative but basically it tells you a square foot per plant, when doing this you should not forget to trim the bottom branches a few weeks in to make sure that the plant isn't wasting its time on the lower branches that aren't getting enough light anyways. 1000 watts is a lot for this small of a table so i might recommend that you consider a 4x4 or something but you should be fine. good luck dude!