I have no climbing resume or anything like that, but I have summited MidPal twice. The hardest part to me was finding the spot where you leave the glacier to ascend the face, which with fresh snow could be a slippery affair. The first time I was with a friend and the face was dry, The second time I was alone, but there was a lot of (spring) snow in the chute, the broad chute you ascend when you leave the glacier. The snow did not feel solid, so I moved left and ascended the rib that bordered the chute. That worked out just fine. Middle Palisade is an awesome mountain, certainly one of the best. And I understand about having kids, but there are many other peaks that this late in the season would probably be a better choice. Mid Pal and Disappointment have A LOT of loose rock, which with new snow would make harder to determine what is loose and what is solid. Anyhow, the best to you in whatever you decide.
edited: several years ago I went to CO to ascend the Bells. I flew to Aspen, got an expensive room, and it snowed two feet that night! So I wound up ascending Castle and Conundrum instead. So I understand, but you also need an alternate plan if the weather goes to pot.