I would personally recommend a walkbehind as your first mower. They are cheaper, more maneuverable, lighter,and they don't take up as much space. There will be rainy day when the Lazer would be to heavy. I would also recommend looking for a used mower, which will lower your start up cost. Buy equipment as you need it not just "because." I have seen so many LCO fold within the first year simply because of to much overhead.
Atleast you are wanting the BEST ."EXMARK"