I presumed the Sarvalaghu jathis would be easier since the counts are in fours. Can you please try to watch a couple times and do it? It will take a while to plan and make a video. Since I didn't plan on making any for those. I am certain you can learn them if you also practice your adavus.
To answer your second question, the online program is structured similar to a regular class, so the korwes are just to learn and introduce you to a pattern of rhythm, movement and choreography. Some Jathis you will find in the repertoire later, and others perhaps not.
Lastly, the files with numbers, we haven't found a way to make them downloadable yet, or viewable online. If you write it down as you watch the video, it will be the same thing. But please give us a couple weeks to figure out the downloadable files. They are more important for the repertoire section.