Nice looking. It looks like there will only about 12 hanging space at the most with this size. Total of 24" in your designated 30" space. Will that be ok for you?

Quality Bath has dozens of 30" bars.

30" bars are everywhere..it's hard to escape them I'd say lol.. don't know your budget but check Schoolhouse Electric. Beautiful lines. Check also Etsy-they carry not only vintage but a lot of new handmade pieces..many blacksmiths are there, and they offer their pieces in different lengths, finishes, and some are really interesting too. Much more interesting and four times as cheap as some Kohler that've gone mad or something.

Another idea for you-there are some double ones..check Signature Hardware for 24' rods

They have 30 as well but only one -I double checked now. You can enter dimensions and a finish there, narrow your search