Dhruvji,
Eventhough I am just a beginner and might not be advanced as many people in this forum, I do agree with your thoughts above.
I think, the sadhana you mentioned are very similar to that daily pooja that one does at home (the one with 5, 16 or 32 upacharas). Yes it has changes here and there. The pattern is similar. So thank you for the outline. I will certainly consult a pandit near me about the proper way to do the sadhana.
By the way, I just thought about something. I may be terribly wrong, so no offences to anyone. I think any sadhana involving step-by-step rituals, if done as mere discplined repetition, without inner involment and bakthi towards his/her chosen god, their efforts might be useless. So I hope, people understand the significances of each steps in the sadhana before even attemptig them. Thank you.