ERP for startup

As a startup, I am looking for a comprehensive and tailored ERP system. I need the system to include modules for sales and customer relationship management (CRM), inventory and warehouse management, and accounting and invoicing. Moreover, I would like some customizations according to need. The preferred platform for delivery of the system is cloud-based. Therefore, I am seeking an experienced partner to help me develop a customized and cost-effective ERP system, tailored to my unique needs, that will be hosted in the cloud.