It will not need to be replanted, really, until the roots fill the pot. If the pot it is currently in is very deep and overly large for the plant, planting into a smaller pot now (Spring) is a good idea. Then, you will not need to repot until the roots once again fill the pot.
On branch cutting... with an immature tree, and a seedling at that, cutting branches "you don't like" doesn't make sense since these may fill in to be the exact branches you'll need for balance later. You can't undo branch removal, really. So, only those branches that are flaws (wheels, crossing, bar, etc.) should be removed.
Watering should not ever be done on a schedule, but when it is needed. Gauge the soil, when it's starting to dry out, water again. This may be every day, every other day, once per week, etc. It depends on the species, soil, time of year, etc. And just because, say, once per week, works now, does not mean it will work in the late Spring or Summer. Water when it's needed, not when it's scheduled. Feeding should be done, usually, once per week during growing seasons (Spring/Summer).
If this is growing indoors, I'd take it outside when all danger of frost is past.
Wiring the trunk should only occur if you have a desired form in mind now. With a seedling, it is difficult to impossible to tell if the form desired will suit the particular tree in the future. Can you work into the form? Sure, but this is something that takes a certain amount of skill/mastery that most beginners just don't have the experience to appreciate. That's not a knock, just a simple fact. For a beginner, doing this will be kind of like dropping a blind Iowa man in the middle of Times Square and telling him he needs to walk home.