There is another thread called first ice that has a few reports. Since you are new to the game i would maybe hold off a bit longer on venturing out. I think most experienced guys, myself included, have a couple early ice spots that we know over the years tend to freeze quicker or better and are a short distance from shore so we don't have to venture out to far. Its a bit early for a new guy to be out exploring IMO. Just because there is a guy safely fishing on 5" doesn't mean its that thick 100yds away.
I know the spot i will try on Saturday will likely be fine, but will have open water nearby because of springs. Its my first go to spot every year to usually get a few fish, but i know where to walk and where not to. Spud bar will still be in hand, spikes around neck and possibly even life jacket on for initial trip out.