When it comes to filters you want to at least turn your tank over twice an hour. Meaning that if you have a 10g tank you want a 20g filter and so on. With cichlids you want to turn it a little more than that. I have a 75 gallon and my filters are rated for about 300g (together). I've never had much luck with canisters in my experience. But hopefully the filter you are getting will work pretty good. IMO
i would also run a on the back filter with it you can never have too much filtration.