Congrats on making it to 13 weeks. For you questions about trimming: Yes I think I would trim along the jawline and under the chin to even things out and tidy them up. I would generally also fade the beard hair at the top of the sideburns into your head hair - although your already looks pretty good in this respect.

As for the moustache. For now, I would say that it looks terrific as it is, so I wouldn't touch it yet. It has a great sweep right now and I wouldn't want to mess with it.