To be fair catenaccio is a very very rigid system that's gone out of use, low blocks nowadays are more flexible in defense and quick in counterattacking. I think a top team with one of Conte's, or Juve's, or Atletico's low blocks could be very hard for you compared to a top team that presses...
If it were me playing against Brighton I'd go for a low block, wouldn't choose a high press at all. Basically out-transition Brighton and don't leave open spaces.
But then again, I'm Italian
You have to have the discipline and patience for it though, it's not a pretty style nor is it easy...