I think the consensus is to move onto Reactive. The transition to Pyret is not a problem at all in my experience.
On the other hand, don't get too aggressive about the pace of Reactive (this is based on trying to do this transition from Algebra once, this year, without training on Reactive). Unit 2, data structures, is a pretty big step and attacking unit 5 on reactors before they've fully digested data structures didn't go well for me.
It sounds like you have time, so just do what you can without rushing it and have fun.