There is not one exact way/timeline to lollipop. You have to gauge your plants. I only have a 250 and 150 hps in my flower so i try to take advantage of topping and lollipopping as much as i can.
This is what works for me. the first cutting i do is topping the plant when it is between 6 and 12 inches (If it is at 2 inches i usually top back to 6 or so inches and use the top as a clone). at the same time if there is a node at the bottom that looks like is is tiny and not going to catch up to the others, i trim it off at that point too. Now you are going to let the plant recover for a week. You will see are the low growth start to take off and bush out a bit, hopefully they will grow at the same rate where most colas end at the same height (Minor additional training , tieing down might be used at that point.)
Then i flower, I let the plant grow for a liuttle over a week. I dont do any trimming until i know the sex. Usually at 10 days give or take you can tell. This is when i start the lollipopping. At this point the plant has almost doubled in size. Now i trim off the growth on the bottom 8 or 9 inches (Depending on the size of plants, again, my grow is small, so i try have have my plants be a litttle over 2 feet when done no including the pot). As dar as trimming i have started leaving most of the fan leaves but removing as of the bud growth below that 9 inch line. I think this helps keep the stock strong as well as acts as a fuel reserve and problem indicator.
hope this helps