I think the MOST important thing when you are trying to teach your child English literacy is to start with attachment and communication. I thank my dad for my literacy skills because he is the one who got me motivated to read books. At the time, he wasn't fluent signer yet but he would use gestures and act out the story in books (he looked goofy but he made me laugh) and while that probably didn't teach me literacy skills but it was what MOTIVATED me to continue reading. I kept getting him to do more and more and my skills increased from that point on and it wasn't long before I started to read on my own. He really made reading fun for me.
Also, incidential learning is very important especially when teaching your child English Literacy. One suggestion: label everything in your house with picture and words. Its a good way to keep your child exposed to english vocab everyday. Also, leave the cc on your t.v. your child might not show interest, but model it, and your child will eventually show interest. For ASL, make sure your child has an opportunity to socialize with deaf peers that use ASL as often as possible. There are many good resources such as the Shared Reading Project which has the English version of the book, and then video tapes with the ASL version of the same book.
The key word is keeping your child MOTIVATED. The more motivated your child is, the more curious he becomes and the more books he will read. Maybe he will become a book worm like me.
Ohhhh, dont forget to model literacy yourself and its practical purposes. I really dont think MCE is necessary....maybe fingerspell the words or create a temporary sign for the vocab for the time-being but I wouldnt waste your energy in learning the system.
Hey....I really admire your motivation in researching what is the best for your child. That shows how motivated you are as a parent and that you want the best for your child.