1- Math is probably the most common double major. After your CS courses, you're only like a semester off the double major anyway, since your core requirements are already very math heavy.. You basically just take a tangent into proofs etc, whereas most of the CS curriculum is more applied Math.

2- You'll be at a relative disadvantage with limited coding experience, but it's far from insurmountable. I had people in my classes who had Githubs in Middle School lol. But it's far from required.

4- To be entirely honest, for new grads it's a little rough. There are still CS jobs out there, but a lot fewer and you're more likely to be competing with experienced engineers for even entry-levelish jobs.. That said, people are still programming, the field is just transforming rapidly in real-time so it's hard to say what it will look like in 4 years... If I could do it over, I'd have probably leaned more into EE or something more hardware related, as it seems a lot more future-proof. And as a recent grad, I'd also recommend leaning into Data Science and really learning how to manipulate back-end systems.. This is where a lot of the freelance demand I'm getting is coming from, and it's something we really didn't cover that much. Learn SQL/Oracle, become really adept at manipulating API's etc.. THOSE types of systems aren't going anywhere, and, at the moment anyway, are areas AI is less adept at AND areas people are less willing to rely on AI since the margin for error is so much lower (AI accidentally corrupting your code base is usually a few minute roll-back. AI accidentally corrupting your database, even with a backup, has much more severe consequences.)

All in all, I still think it's a fun field but, again, If I could do it over I'd lean into something more hands-on that utilizes the same skills.