Those are some great shots. The one above is amazing. I'd be really proud of taking that photo. You now have two lenses. Allow me to share one of the easiest maxims in photography: limit yourself to the three hours surrounding sunrise, and the three hours surrounding sunset. Yeah, you can get pictures other times but if you look over every "great shot" you've ever taken, I'll bet you'll discover that the overwhelming majority of them were taken near sunrise or sunset. Following this rule also allows you to be sociable and not annoy the shit out of your friends and companions with stopping down all the time. They'll know that you're all theirs until the light gets really really good.
One of the nice things about this maxim is that this time period is when a lot of animals are most active, to avoid the heat of the mid-day. So if you're ever into shooting wildlife, this works on another level. limit yourself to the three hours surrounding sunrise, and the three hours surrounding sunset.
Thanks! I have a natural tendency to do that, about a third of all my photos are of sunsets and another third around sunset. The midday photos almost always have blown-out lights and highlights. On the other hand, my friends know I like to take photos and I know they like the photos I've made, so they don't really complain at all.