The first few years nothing needs to be written in stone as far as what exactly your business will include. One thing is very clear and that is that ‘multiple streams of income’ has extreme logic from many perspectives as far as a ‘goal’ or ‘target for your business plan.
If you go in with an exact idea and you have everything you need to implement it, then you can spend the years refining and perfecting the processes to run your business effectively so that it will generate bigger and bigger profits as the years roll by. Some people learn best by doing = ‘hands on’ and therefore everything can be seen as an experiment. Others just need to read the directions and follow the instructions.
But the point is not to get stuck in any way before you are able to determine what it is you really want to do, how you want to do it and if it works when you try it. I