From your post i'm guessing that you don't know the first thing about sumps. DO NOT let your lack of knowledge of sumps swing you into simply blocking up the holes and opt for the "easier" cannister route. People on here simply swear by sumps, myself included. It was only a few years ago i was in your situation, not knowing the first thing about sumps yet still going to the store and buying a sump set up. They are simply brilliant. Read up on them, there's masses of info on line and of course you'll also get great advice on here.