I am not familiar with PAF, is paroxamal AFib it seems. Are you in NSR most of the time? When the AFib is active to you have difficult symptoms? If yes and now, I'd talk to the doctor(s) about being treated with just aspirin to minimize clot formation during the AFib periods. Seems the Beta Blockers are too strong for you, perhaps you will adjust to them over time. I have found my blood pressure back to normal ranges after being on high dose beta and calcium channel blockers, both lower BP. Seems my body, which never had a problem with high BP, has adjusted to the medications. They still cause some fatigue and if I "jump" up from a resting position I can get a "shot" of dizziness.
I have had paroxamal Afib since 2003. I was treated for 7 years with a beta blocker, Atenolol, in divided doses along with Xanax to dampen the adrenaline. That worked and a beta blocker is a pretty benign medication. Now my Afib is happening more often and I have been put on Norpace, an anti-arrhythmic drug. There are a few side effects, but it is helping.
I am not familiar with your drugs, but it does sound like you're being over treated. Have you seen a EP cardiologist? I think it's unusual to treat Afib with a pacemaker unless you've had an ablation that destroyed the sinus node.
At any rate, you deserve an explanation and to be part of the treatment plan. It is your body, you're paying for it, and you live with the results. Perhaps a second opinion?
Good luck.