Welcome to the Forum, Zamna!
Babies are linguistic geniuses and they have no problem learning a few different languages at the same time, in fact early childhood is the best time to learn languages. You have a rich heritage -- knowing all those languages, and I don't see the need to hold back with introducing them to your baby and toddler.
My own children are exposed to 4 different languages, they both had no problem with speech or mixing the languages, in fact they both were very early talkers and are very comfortable around people of different nationalities. Their vocabulary is very advanced, which I attribute at large to using Little Reader and other early learning tools.
In fact, Glenn Doman, suggested to expose young children to multiple languages to help them to form neuro-connections specific to learning those languages. Then later in life ( even if they do not use given language a lot in their childhood) if they would decide to learn it, it will be much easier for them.
Little Reader is an excellent resource, we use it a lot. Apart from curriculum, you can also check a free download section for additional Little reader lessons.
You can find it here:
English lessons by category --http://forum.brillkids.com/downloads/?cat=63
Lessons on other languages --
http://forum.brillkids.com/downloads/?cat=64Looking forward to hear from you how it is going!