I took pax fairly quickly
I took pax fairly quickly after getting my license. All was well and a real non event.
However several months later, I took a passenger who was INCREDIBLY nervous. Informed me, as we were charging down the runway, that she wanted to get out. Put real extra load into the flight since I was watching her and trying to fly a circuit and see if she really needed to get back down or whether it would pass.
Had that been my first pax then things may have turned out differently.
As with everything though, the only way to get better is to go for it. Unfortunately though, you'll only truly know if you went to far when it's far to late...
Personally, if pax had flown in a light aircraft before, or don't get seasick or anything, then I'd probably take them again in good wx having just got my license.