The only team I'm worried about is France. I think they will win their group so if we win ours as well, we cannot meet them until the final. If we make it that far, I'd give us a better chance against them in the final as our young team should grow in confidence the further we get. However if we lose to Croatia for example and finish second, then scrape past someone like Sweden, we would meet France in the QF and I'd be less confident in our chances.
Obviously there'll be some twists and turns, but if we win the group and other games go to form, we would have to play Germany/Portugal, then Spain, then Portugal/Germany/Netherlands to get to the final. That's not an easy route, but neither is France in the QF and Belgium or Italy in the SF on the other side of the draw. So if we want to win the whole thing, we'll likely have to knock out 3 or 4 of the traditionally strong nations along the way.
I'll also add that France won't be worrying about plotting their route to the final, so if we want to be serious contenders, we should take the same approach, i.e. we can beat anyone and everyone.
Bring it on!