Is there good reason to bore out the carbs? Do you understand fully what the result of this is ? If not, can you afford new ones when you go too far and are not satisfied with the change?
There are limits to everthing and if you are not aware of what the final result will be, you could be in for a surprise when you modify too far. Carb size (jetting, etc) is balanced with the engine and exhaust system to achieve a result. If you like tinkering and experimenting go for it.