Yeah looks like it went pretty great! Awesome :D
My group is also the kind of group that would take a 4 hour adventure and turn it into a 4 month campaign. We all dig into the details so much and role play everything out so the plot moves at a pretty slow pace, but it's the experience we want. So if that works for you then I wouldn't sweat the pacing.
As for the stand still attacking problem, I definitely can relate to that. It's tough to remember and utilize all of the other options when going for damage is always the most alluring choice. Monsters can always step then move to escape, or shove away a foe before trying to escape. Some enemies have cool reactions that allow them to move after being attacked which spices things up. Flanking is really really important in this game so it's expected that your PCs will always be going for it. Enemies should be going for it too.
As for switching from 1e to 2e, my 1e group is also slowly making the change. We all really want to play with the 2e rules, but our characters aren't supported properly yet and we don't want to homebrew everything. We're hoping that the October playtest of the new classes will give us what we need to make the jump.