Use the washer for a few months with the factory-set water level and see what you think of the results.  If rinsing is a concern, add the extra rinse option to your cycle.  For years I lowered the water level on my WCI-made (branded as Frigidaire, Westinghouse, and Gibson) front-loaders and found cleaning actually improved.
As has been mentioned, it's human nature to want to see a lot of water splashing around, but I get excellent results from my 2010 Frigidaire front-loader which uses very little water.  
Hope you enjoy your new washer!  I'm a big advocate for modern front-loaders.  They clean well, spin fast to reduce time in the dryer, and are very energy and water efficient.