There is no reason to go past 2 gallon pots if you are going to feed multiple times a day and only do a 5 week veg. Each transplant will slow growth down for a day or more. Now with the light changes, why do you think that's necessary? Go from clone to your final veg light. Start with the light high when you first put a clone under it, then lower the light. You are making all of this why more over complicated than it needs to be. Every single person on this thread is trying to tell you the same thing. Shouldn't that be hinting something to you? The point is your multiple transplants is counter productive to your goal of multiple feeds/faster growth rates. One last point is you are not doing a coco grow. With that little of a ratio of coco to hydroton, you have more of a hydro grow than a coco grow.