Haha, I guess adding the -san makes it feel very distant huh? It'd be rather uneasy if I were to address everyone here using honorifics as well... Mr. and Ms.
Yeah, we are friends. But adding the -san is not weird and your Japanese is good. very good even. Just I prefer tameguchi more than keigo:)
un, sore de daijoubu dayo.
And could I call you pichu?