Thanks, guys. You gave me so many good tips to think about. The main thing- yes, taking the course is the next step I'd like to complete. The online affair with photography is not enough any more.
Timing is not much important, I wish it can be sooner that later of course.
For the basic set up I'm missing flash for now, but soon.
Since I made Pentax my primary system, I prefer to learn with K5iis. Pricing seems reasonable, $400 for 2 month, and I will try to search feedback for the class. I postpone contacting to the instructor before I'm 100% sure I will be able to find time for not only class hours but class home work as well.
Definitely I don't want to enter the brand oriented course, it's money waste. I already shoot with two systems, and there is not much difference in fundamentals, only in features. The good instructor should know that better than me.