Pretty cool. You might add a counter to keep track of how many breaks you have taken, since you usually take a longer break after every four short ones.
I think I would steer new learners of SE Asian scripts away from Cambodian as a first language to learn. Cambodian, while it is a beautiful script and has more-or-less regular pronunciation, also has a few odd exceptions, and complex vowel pronunciation rules. The consonants are divided into two groups, and many of the vowels are pronounced differently in the first group than in the second. That said, after learning the Thai script, Lao and Cambodian were not too hard. Either way, they are all great languages to learn.