Not sure who counts as the lead, here, but I think I could make it work with either of them if they'd be willing to put in some effort as well. They're both very immature, but they're also quite young and I'd like to think that they'd grow into their responsibilities. It's indicated that they have the capacity to do so in the alternate futures in Life with Archie, though I'd hope our lives together would be a bit less melodramatic.
As for what our kids would be like, I think that Betty and I might mitigate a lot of the worst tendencies in one another and I would hope our children would be hard working, kind, and intelligent, but I would be on the lookout for tendency toward overattachment and unreasonable self sacrifice as well as obsessive behavior.
Assuming her father doesn't disown her (and I don't think he would, as I think I'd at least be a step up from Archie), the kids I have with Veronica would a least be well provided for. I'd hope that they would inherit at least a portion of their mother's strong will and general talent, though I fear it would make them pretty hard to manage. I think the extent to which we indulge them might be a point of contention between us and we'd have to work at finding a way to balance our parenting styles. I'd also be concerned about my relationship with my in-laws. My biggest worry is that I'd see laziness, excessive manipulativeness, or lack of empathy in our kids and maybe be a little harsher on them than I should. I'd hope that we as a family would be as willing and able to learn from our mistakes and try to do better as Veronica.