Old man trail bike question

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I live on a partially dirt road, and am near a bunch of undeveloped land.

I wanna get a little putt-around "utility" dirt bike, for me, the GF, and my kid to play and learn on, and ride about...around 100cc (2T).

As I look through the local craigslist, I find myself more attracted to the old-school dual shock arrangement. The truth is, I do want something a little more sedate (perhaps just not as sedate as a 4T...lol).

I know the modern monoshock is a superior layout, but I fear I won't like the dynamics of the bike. I don't think riding a "scissor" is quite the same experience.

Is this just me pining for that old "DT" flavor of my youth?

Should I ignore the soul-less appearance of a modern monoshock, and get something more new school?

My GF is tiny, and so is my kid (little over 5'), so maybe that's why I'm leaning towards the old 2-shock 100cc-class bike. I don't really care that it's a 3/4-size bike for me (5'10"), because it's just for playing around the house, really.

Any thoughts? Anyone in NJ selling something like this?