Hello,
You could use the importListStyle method (you'd need a small patch available only for licenses with LUS), use a list template and merge it using the MultiMerge class available in Corporate and Enterprise license or if needed we can add support for both properties as new parameters.
About using phpdocx in a SAAS please write to contact[at]phpdocx. As you can read on http://www.phpdocx.com/faqs (7.phpdocx license use & restrictions):
You may not use standard licenses for a SaaS or a PaaS service. Please contact us to know the specific conditions for those particular cases.
Regards.