Greetings !!
We have been working on SUite CRM from past 4 years and have developed several custom modules and custom templates. We have customized SuiteCRM to ERP Levels as per our Customer needs.
We can create a custom Invoice Template with Multi-Line ( Line- ITems) facility and can design it as per your requirements. Please let me know when you are online and available to discuss.
Kind Regards,
Archit S.