To begin, I would seek an appointment with a top level electrophysiologist. Dr. Andrea Natale is one, and there are a few others that folks here way more qualified than I can help with.
If you have a an Android or Apple smart phone, you might consider purchasing an AliveCor device, that will give you an instant, live EKG that will evaluate your rhythm. If you see an EP, he/she may want you to wear a 30 day event monitor to aid in determining your afib burden. It sounds like you may be symptom free when you are in an episode? If you find that you are, low-sodium V8 with it's high potassium content helps many folks hearts settle down. Magnesium and taurine are two other supplements that many, myself included, take every day. If you poke around the links on this site you will find a wealth of information regarding afib, supplements and so much more.
I believe that the top level ablationists almost exclusively use RF, though many folks have good outcomes with EP's using cryo. Bottom line though, should you and your EP decide an ablation is right for you, is that he/she be highly experienced, having performed thousands of procedures, and that they are experienced seeking out and ablating areas of electrical activity beyond the pulmonary veins, including the left atrial appendage.
I'm glad that the stroke you had apparently affected you very minimally. There are many folks here that are way more knowledgeable than I am, and I'm sure they'll contribute too. Educating yourself and being proactive about your afib management will help you make the best decisions regarding your care. Good luck :-)