Don't worry. It is always possible, to make a "Deluxe", "Reimagined", "Redux", "V2.0" or whatever it can be called, version later. Main thing is, that one (bugfree) version is ready, when timeline ends. Later it can still be improved. Regarding setting up different levels, maybe a look at the objects in "Money Puzzle Exchanger" or "Magical Drop" can bring new ideas. The game-princible is similar, only turned around sideways. Maybe the arrangement of the coloured bubbles, or parts of it, can be adopted for some of the levels? Just suggestions, i am not sure if possible. :)