Starting a Plan to be a CRNA

I have been reading over all the post and I have a couple of questions. 1. Working While in School. I am a single Mom and I will have to work. I can pick when I want to come in but I want to plan where it will not affect my classes. Any Suggestions? 2. How long from start to finish does it usually take to become a RN-NA. I have planned to get my BSn from the same school I plan to apply for NA school (which is 30 months). I have been working in healthcare in the Critical Care field as a AIde just to get my feet wet and see first hand the health care environment and I love it. Are there areas In a hospital I can work to be exposed to CRNA's or should I ask them if I can shadow?
I am trying to stay very organized and make a clear path so when I have obsticals I won't be so discouraged or surprised! 3. I was planning to become a MD but I fell inlove with CRNA's and what they do as for as getting ready for CRNA school like you prep for MCATS for 4 years join organizations get experience volunteer, is there anything I can do to make my chances of getting in better? besides grades, are there any books or sites that will help me along like Pre-Meds have Med school prep books are there any out there for those of us who want to be CRNA's?

Thanks A Million!!!