Excelsior LPN to A.S RN program

Looking for major advice on obtaining my A.S rn. I am currently an LPN and have been one to two years in Mass. I recently got laid off from a state correctional facility and decided it was opportunty to endeavour.
As of march 09 i signed up wit the college network ( a lot of controversy) , however during my investigation, i learnt that using the excelsior study guide and taking the eight ( classes and exams) and i believe one Nsg concept class, i should be able to take and pass my boards.
If this sounds right please kindly advice me.
Also can this be done within four months ( not having to work)?
????How many hrs of study a day is recommended?
I am using the txt bk suggestions from the excelsior study guides and answering the questions at end of ea chap.
What i s the best way for me to ennsure success, please any advice?