Can I have different ringtones for two separate numbers on my phone with dual SIM?

In call forwarding you'd be able to change the setting on when, which number you would call out of.

So the phone, what you can do is you can change the number that makes one of the numbers coming in, but you wouldn't be able to change...

No, it shouldn't have any problems. You can have two SIMs into your phone.

No, you wouldn't be able to have different ringtones for each number.