Cloth diapers advise!! First time using them.

I'm looking for any cheap sites to find cloth diaper covers and prefolds. I've found a few myself but was wonder what other mom/dad's are buying from. I'm investing in 6 size 1 thirsties covers, 24 Indian cotton prefolds size 6-15 lbs and 24 15-30lbs and about 6 one size covers including inserts. Should I invest in New born size prefolds and covers instead of the one size and size 1...this is my 3rd baby last was born at 8lbs 3 oz so I'm not expecting a small baby...not that i can say for sure just kinda not expecting this one to be smaller. Any advice on cloth diapering would be great. Thank you!