Is this OK ?


Personally, I wouldn't do that as a Bishop is a rather powerful piece to be throwing away like that simply for a positional advantage.

Too early in the opening for a bishop sac. The sac doesn't give you anything but a short window for development. The king quickly goes to safety and white finds himself a bishop down with almost no compensation.

the position gained isn't really even a "gain" so the king is pulled out a bit... i don't see any advantage at all. i hope my opponents do this.