The 20th century philosopher and "spiritual entertainer" Alan Watts traveled the world in the 1960s explaining eastern philosophies to western audiences. He spoke a few times about westerners wanting to learn eastern philosophies. One problem with westerners going to eastern spiritual centers (a westerner going to a Zen monastery in Japan was the example he used) is that the rituals do have a purpose, yes, for the people of that culture. Many of the rituals and techniques of those schools are used to break the bonds of the culture those people grew up in and live in so they can see things in a new way outside the way their culture conditions them to see.
For westerners, those rituals and techniques may be worse than useless because we come from a different culture entirely. You are basically learning something just to unlearn it. But you can't expect a particular school or tradition to change its curriculum for people from another culture even if the end result may be enlightenment. I'd suggest just be aware of the possibility some of the teachings and methods used may not even be necessary if you know what is going on and why those teachings and methods exist.
There's nothing wrong with wanting to live a monastic life. The routine and peace and quiet should be very nice for someone with autism. But if the goal is to seek spiritual awakening or enlightenment, that can be done much more simply. Alan Watts also said something to the effect that yes, spiritual instruction is needed IF you think it is needed. People make all kinds of excuses to themselves, saying it will take years of dedication and meditation and sacrifice, but there are other people who just say psshaw, why is that necessary, and they are enlightened instantly.
A warning about Alan Watts: some say he did not really teach Zen; he taught about Alan Watts. To some degree this is true, but he was an eclectic genius on many subjects with a very broad perspective and awareness of the limitations we all have from our own culture and even the structure of the language we think our thoughts in.
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"When you ride over sharps, you get flats!"--The Bicycling Guitarist, May 13, 2008