Last week I finally completed lab 3b. One of those problems that simply redoing a given part solved everything (despite being correct initially). I haven't even thought about doing the RPML document yet since I have a ton of projects in other classes as well. I'm hoping that RPML will go fairly smoothly as I don't plan on doing anything too complex other than putting things into sections and using 2 images.
Lab 4 is going fairly well. I haven't spent anymore time on it other than last week in lab, but I made some decent progress and may work on it a little today.