Hello,
I have gone through your requirement and I can able to migrate your current VirtueMart data like products, customers, products, categories, orders etc. It will take me around 2-3 working days to finish.
To get me started I need your current Joomla database from where we can migrate. I have a few questions to ask you so it would be good if you can drop me a message once you have a moment.
Waiting for your reply & looking forward to work with you.
Thanks,
Sid