Hi,
my team has proven skills and experience both on vtiger CRM itself and on vtiger integration with other opensource sw. We've recently released a basic vtiger osCommerce integration on vtiger forge. We've done some decent work on Joomla and vm too. I've some good suggestions on how to make the two sw communicate. The budget is imho quite small, but we can focus on priorities (ie users + orders oneway sync from vm to vtiger)
Ciao
carloz