invoice builder Saas

Allow users to login to account
add company logo
Enter company information
Enter company address
Enter company contact information
Enter license #'s'
Create new invoice
Enter client address
automatically add an invoice #
Pre populate with user logo and information
add user defined line items
possible pre populate with different line items
select unit type
Translate from spanish to english button
Should be able to save a draft and return to the invoice to finish later
Genrate to pdf and excel
save all invoices so they can be edited even after it was generated
Have a pre written contract that is in spanish with fill in the blanks for delivery to client before jobs starts
spanish to english Translate button create document in pdf
possibly have the contract pre filled with client infomration that is inputted during the invoice