advice on pediatric float position

Right now I'm a new grad doing L&D, and loving it, but I'm also interested in Peds and NICU and I heard my hospital has pediatric float positions for general Peds/PICU/NICU. I'm thinking after maybe 1 and a half or 2 years of L&D, if I'm ready for a change, I could apply for it. It seems like a good way to get cross-trained in all areas of maternal-child health and make me more marketable if I move to a different area and want to apply to a Children's Hospital. I also think all of the areas are interesting and wouldn't know how to choose one!

I'm wondering, do you think it's too broad a focus? Is it better to focus on one of them one at a time? Peds for a few years, NICU for a few years etc?

And would a nurse with less than 2 years experience in L&D (with occasional floating to postpartum) be able to handle a Peds float job like that?

They said they hire nurses without Peds experience for it. Which seems surprising to me. But I hope that means they train them well.

Also, would switching depts after about 2 years be frowned upon? I know nurse managers really don't like to see nurses who leave a first job after just a few months, but would they feel the same after about 2 years? (I know it's frustrating to them to rehire and retrain nurses)

(the reason I'm saying 1 and a half to 2 years is that I'm getting married in a few months and may want to have a baby in about 2 and a half to 3 years, so if I want to make a switch of depts and get re-oriented to another unit it might be good to do it before having a baby)