I think what you are trying to do needs to be larger than what you stated you want. The square vrs round thing is a communication issues with your artist, you just need to be firm and tell them what you want. If you want this tattoo to be good, however, you really need to be thinking larger scale, IMHO.
You said you wanted to make room for other pieces, why not just do that now or save up for it. I can’t speak for anyone but myself, but now that I have some serious work I *almost* regret getting smaller stuff because it limits the space.
My vote: Either make this an important piece and get it in the right size or pass on it. If not, you run the risk of getting a half assed tattoo that you won’t love.
