Geebot, the OP question comes down to this. They can either get a robot with their brand new pool, or add some other features such as LED bubblers to the pool and a larger decking area around the pool. OP seems to want to get the decking and bubblers. OP is asking, is this OK. To me the answer is 10000% yes since things like bubblers can never be added later, but with that decision remember that you will need to manually vacuum your pool once or twice per week, and that will take 30 minutes or so each time. IF this were your pool, and you were building it right now, would you build less pool now to get a robot now, or would you build more pool now and add a robot later?