Flow options for a 120G peninsula tank

[FitoPharmer]

I am redoing a 120G 6' marineland RR tank. It is currently setup peninsula style, and will stay that way. There is currently no additional flow in the main tank. The circulation is provided by the sump pump, which is only 2000gph before head loss. I was looking at a vortech or vortechs to do the job but I had a question since I have never used one before. Will I have a more effective wave mode with 1 MP60, or 2 MP40's? Since the 3 sides of the tank are around a children's play area, I am very hesitant to put any power heads in the tank that are not right beside the wall with the cord well hidden. I was also considering a wave box, but I was not sure since I know very few people who that have used them. Maybe a MP40 and wave box?