Whats the largest size you can print with g3+top prime lens..

Hi was wondering if anyone has opinions on how large you think its possible to print an image shot with g3 and a top prime lens (with excellent IQ)... also at a iso below 400, full resolution and RAW.... (for example a landscape shot on a sunny day, with 14mm 2.5f prime at 100 iso, and RAW)

i am asking this question pre emptively. i dont yet own a g3.