You reached age 63 this year. Correct
If you have 52 class S contributions for this year and you ceased your self employment this year you will qualify for 65s benefit in the S class system. Yes, I have that from my self employment which only ceased recently.
If you have the above, you don't need to get any class A contributions for qualifying for 65s benefit. Is 65s the benefit that is available from age 65 or something that just happens to have the 65 in the title?
It might be beneficial to still get A credits to use for the time you claim JBSE.
If you get employment and earn at least 38 euro you will get one paid class A contribution. So a few hours work is all you need. You can then sign on for class A credits. This would require just one sign on.
Will you reach the 520 minimum full rate paid contributions by age 66 ? No, I will have 468 class S if I, for example, draw €5k from my ARF. Also I would have a few class A from 1978.
Have you already reached this level, or do you need more class S to reach this level ?
If you need more class S, is it critical that you get 52S in your 64th and 65th year ? I can achieve this by drawing from the ARF, yes?
If this is the case and you claim JBSE you might not reach the 520 level.
In this situation you could make voluntary contributions while claiming JBSE.
If you don't need extra class S you would not need to start ARF drawdowns.
You could instead use class A credits to maximise your Prsi record to age 66.