How to evaluate weather to add a second bath 2 x 1

[William Bellefontaine]

Hey all! Recently brought  my first investment property. Originally planed to make it a 2x2 but now having ran into some complications. Old gas lines in this wall, steal 4” soil pipe through the house, load bearing support, moving electric etc… there may be a bit more to pay for than originally intended. Feel a bit stuck on how to make a decision on what to spend on. Any advice. I do know it would rent either way. Could get around 200 more a month 2x2. Here is the existing bath… the other option is of course just make this new and nice.