You can't use high light without also using pressurized CO2, and using the optimum level of CO2 in the water. Excel is very good for low medium lighted tanks, but isn't good enough for high light tanks.
If you start out with a low medium light tank, and use that to gain experience in maintaining the tank, fertilizing the plants, aquascaping, etc. you will then be in a much more likely position to succeed with high light. In addition you will have tried more than one scheme for keeping a planted tank, and will have learned a lot more about the various plants that are available for planted tanks. Then you will still have the opportunity to go to high light and learn still more. When you start out with high light there is a much too big an opportunity to end up with an endless battle with algae, which may sour you on the whole planted tank experience.