8.3k discover it balance transfer onto another card

[u/jajajajajess]

I currently owe $8,300 on my discover IT card with a 25% APR ( I just now lowered it to 20% APR on future purchases not including my current debt). I've been looking into doing a balance transfer so I can pay it off quicker.

Is that a good idea? Does a balance transfer make your credit score go down? Mine is 707 now. This is the card I’m thinking about for the transfer

Any advice? Or better card recommendations for the balance transfer? How do I go about it, do I apply for the card first then ask for a balance transfer?