The more tissue the cutting has, the more energy it has in the form of nutrients, carbohydrates, and raw materials that it can turn into root cells. A smaller cutting is only for the sake of convenience or ease of shipping or cramming it into a sandwich bag rubber-banded over a pot--artificial concerns. Thus, you actually have better chances of success with a slightly larger cutting.
However, you have to balance this with the fact that a larger cutting with more leaves also uses more water to stay alive. So, there is always a risk that a bigger cutting can dehydrate and die before rooting. If you are able to keep humidity at or near 100%, no problems should occur. I am fortunate enough to have a misting bench for rooting... I could easily take a 12-foot cutting and root it in that environment because there's no way for it to dry out. Normally the causes of death with rooting are dehydration, pathogen invasion on the cut surface, or incorrect soil temperatures that prevent root formation. Soil temperatures need to be around 70F and I strongly recommend bottom heat if you don't have it already. If you get all those variables right, you'll be fine.
If you notice the leaves curling or turning paler--typical signs of drought stress--then simply nipping off a half inch or so of each leaf is a much better and less stressful way to help the cutting. If you still notice it drying out too much, nip a little bit more. I would caution you against recutting because the plant will start putting all its energy into defending that new wound, sealing it up, and will waste all of those resources that it's already putting into making roots. It will be left in a weakened, drained state and may not root at all.
Most cuttings will not form new leaves until they have formed adequate root systems. When the root/shoot ratio of a plant is out of balance, the plant's hormones tell it what tissues it needs to concentrate on making. It may sound silly but a cutting
knows it no longer has any roots.
Since yours is growing, I imagine the tug test will tell you that your plant is rooted just fine and needs no pruning. A 1/8 strength fertilization might stimulate it to grow faster.
Hope this helps you for future rootings