1.) does this module have the ability to email customers on set intervals before the due date?  so they get a reminder the bill is due 30 days before due date and 15 days before due
 
2.) can the renewal date stay on a fixed anniversary...like a subscription.  So regardless if they pay early or late, the original anniversary date will stay the same.
 
3.) what is your custom development rate?
 
Thanks,
 
Marc