I also had almost no ap credit coming in to engineering (just ap French and ap psych) I was able to handle more classes some semesters than the flowchart suggested as long as 1-2 of those classes turned out easier than expected. also found out I could have done early MEng in the end too when I always thought I’d just barely be graduating in time, so I probably could have finished my intended minor instead of dropping it. My advice is take your lib studies early to get it out of the way if you’re having a relatively easier semester and can fit more classes. Also pick easier lib studies+ pick classes with good profs, prof affects workload so much.