It sounds like you've made your decision, but I just thought I'd share why we have opted not to do YBCR. A study published in 2007 found speech delays among children who watched EDUCATIONAL television before the age of 2. Several studies have also shown that children learn language much faster when interacting with a real, live person than a face on a TV screen.
There are believed to be two reasons that viewing causes delays: even if you don't just park your child in front of the TV to babysit the baby, video viewing necessarily cuts into the face-to-face time you spend with your child, which is the most beneficial from an educational standpoint. Also, many believe that baby's brains just aren't cut out for TV viewing and that it causes overstimulation and possibly interrupts some of the connections being made.
I will say that YBCR was not studied in the studies I mentioned above, so you might not find the same negative effects from using those videos. However, it is not a great leap to think that if one educational video causes delays that other might as well.
I absolutely agree with you about the importance of reading; I myself was a VERY earlier reader who always read many grade levels ahead. I learned to do this the way most early childhood educators suggest is best -- my parents read to me every chance they got and taught me letters and letter sounds from a very early age. I then learned to read phonetically, rather than memorizing specific words as with YBCR. I just wanted to point out that there are other ways to teach your child to read early that don't involve early television viewing or simple memorization if you wish to avoid those methods.