The wavebox is a nice addition, it keeps detritus suspended and every mm of the aquarium is moving. No doubt though the Streams alone could give you a healthy tank. The wavebox has some drawbacks, it is a bit large, it can shorten tank life due to the extra stress from the waves. Personally I will use one in my tank but they are not a necessity.
The 7095 is scheduled for September or October. The moonlight is pretty cool, it also has a new program and the pumps can switch back and forth every second instead of every minute on the current version. It is up to you, it does cost $40 more than the present model.