BHP/Turing/Polymathic?

Hey guys, I got accepted to these programs, and I’m super excited and thankful. However, I’m unclear on a few things:

Is it possible to do all three at once? Is it a bad idea to do all three at once? How much is the workload and what are the perks/downsides? If anyone could give me some tips, I’d appreciate that a lot. Thanks!!

When and what major were you accepted to?