I have the Artesian Echo Canyon 24 ft. I did a lot of reading on the N2 system and have removed it from my pool. I would do just chlorine and drop the N2. Have them give you some other goodies. I did the non return pool light. I would get the pro install. Have them throw you in a good test kit.
As for upkeep. I spend about 20 minutes each day to check chems and adjust chlorine with bleach. I grab the net and pull leaves. I adjust ph on the week end. Saturday morning I have my oldest drop in the vacume and babysit it for about 3 hours and go swim.
Echo Canyon is the best bang for the buck in the Artesian line.
Have fun, enjoy your pool, let us know what you do.
Steve