Have not read this book, but i wanna say;
you are on the right track....your intrest in Orthodoxy that is.
So why do you wanna mess around with other religions?
You lucked out>>>u got it right,
So, dig your heals in, keep your eyes on Christ and immerse yourself in the beauty of Orthodoxy.
The above is coming from a former "Zen" man of 20 or so years.
I packed up all my Budhist books in 3 huge boxes and put them in the garage. Talk about baggage.
I now travel light, no more baggage just the Holy Bible.