aftermarket disc brakes & 15" wheels

[SWEET7T]

I'm planning on a future swap to disc on the front of my '70. I will be staying with 6-lug and using an aftermarket kit. I'm also wanting to keep my stock dog-dish hubcaps.

I haven't found my stock steel wheels yet, and have recently read that the 15" wheels will not clear the calipers... The sticky says so

I also read that the 73-87 16" 6-lug will work as the replacement.

So, is all the above information true? I just found me a set of 16"wheels locally and want to make sure this is the route to take or to hunt some 15".