Hi Hawklord
If we can recap, we have a beekeeper from Finland (shan't name him Admin) who insults anyone who presents a different view than his own, and uses unusual practices and keeps his bees in a totally different environment than most of us. I suspect that some of his comments on the sense of feeding comes from his experiences in Finland where there is no spring but winter suddenly flips into summer.
We also have several experienced UK-based beekeepers who are mostly saying add that second box at the right time, when they are near filling their first, and go down a number of different possible routes once you have that second box well used.
Some are suggesting that you buy queens, I'm more in the natural mating camp.
The possibility I gave came from Hoopers book Guide to Bees and Honey, and is one of the best and simplest ways for a beginner to make increase beyond simple artificial swarming. However you will need nuc boxes if you are doing a three-way split from one of two brood boxes. It is also possible to use ply dividers and a special 3-way (or two-way or four-way) floor, then you can raise more colonies in a standard brood box sitting on top of its parent brood box.
Hawklord, the bees' impulse early in the season is to build up to a big colony. Give them the space (and feed if you like, no matter what was said earlier) and they will fill it with brood if they are a vigorous colony. No need to mix things up as you described. Once their brood nest is up to their preferred size they will maintain that nest and lay in stores. In their own natural cycle they will then fill their space, feel cramped, and go reproductive. If you wish them to raise new queens for you rather than buying them in, encourage that cramped feeling.
all the best
Gavin