Thanks for the Wat Rampoeng tip, I'm going to go and check them out, it's not far from where I am.
With regards to the 10 eons, the point of that particular teaching is that even if you become enlightened in an instant, it had meant that you were practising for the previous 10 eons, and that moment was the final icing on cake which pushed you over into nibbana. Goenka teachers this point in the 45 day courses, and also Ledi Sayadaw (died 1923) and other monks I believe also teach this.
If this is true, presumably it is impossible to know where you are at in the 10 eons, the beginning, middle or end of the process.
It could also be a method to get people to focus more on sitting, because it came with instructions that in all those eons a buddha is very rare, and that you had to perfect and accumulate vast quantities of the 10 paramis to make to the final goal. And that there are 2 paramis that are only available in a Buddha sasana (which we're in) - being upekkha (equanimity) and panna (wisdom). So the ideas is that you focus a lot of energy right now to develop those 2, because you're not going to get another chance across all the eons without a Buddha.
I doubt any of this is the Buddha's original teachings.
Perhaps it's true. Or perhaps it fairy tales.
The question is, does it work to help you with your practise, or hinder you?
I haven't found it very helpful.
Nothing to do with Zen. I don't know anything about Zen.
But Zen gets 11 million searches a month. Buddha only gets 4 million.
Go figure... or rather... Go on 'zen wake up!