impact of game if changing ingame stats?

Greetings

I am new to BG and i have downloaded the BG2,EE for my mac and i can say i really like the game. Thing is that i have messed up a little bit my stats and i cant create a new character and start from the beginning.

I found out with some googling that there is a tool that can change your stats but since this is a cheat/hack i dont know if it has any negative impact to the game`s mechanisms.

Hence my question is:
IF i change my stats, will there be any problem with the mechanisms of the game? Will the skills/spells/flow of game e.t.c will get messed up?

Thanks