Very confused about paella pan size, number of servings, and rice quantity.

I've been trying to get good at cooking paella. I have a 38.7cm (15.25 inch) paella pan. Some of the online sources I read said that usually a pan this size is suitable for up to 6 people. On the other hand, I've read that usually you want to use about 100g bomba rice per person. But if I were to cook 6 servings in this pan, that would mean a rice quantity of about 600g, which seems to be a lot of rice. When I tried to cook 600g rice in this pan, my problems were: (1) the layer of rice was thick, so it took a long time for the liquid (I did 1:2.5 rice to liquid ratio) to evaporate, and (2) by the time the liquid was cooked off, the rice inevitably became mushy.

So my question is what is the maximum amount of rice I should cook in this pan and still get good texture (i.e., no mushy rice). Thanks in advance!!