The problem with that is that you can't delete a tx from the mempool, so if you ever need to move funds elsewhere you'll have to do a CPFP which is even costlier.

Just did this for the first time last week. The transaction was in the mempool for around a week, then cleared yesterday. Magic.

If you are patient you can be rewarded. Your transaction can also wait for months. I've had this happen but it wasn't a big deal. I was experimenting anyway. Just a word of warning.