boon - do some searching on other threads to see what others have to say. You are the only one that can decide if this will work for your needs but it is helpful to hear what others who have the units think.
Personally, I don't think you can go too far wrong with any of the major players - they all make good cameras. All cameras will have advantages and disadvantages - same with housings and strobes...you just need to figure out what might work for you and jump in...there's always going to be another choice out there and you'll go crazy trying to get the "perfect" set up...and you'll miss a lot of shooting time!
Personally, I don't think you can go too far wrong with any of the major players - they all make good cameras. All cameras will have advantages and disadvantages - same with housings and strobes...you just need to figure out what might work for you and jump in...there's always going to be another choice out there and you'll go crazy trying to get the "perfect" set up...and you'll miss a lot of shooting time!