Biginb or CRM for Solo Business

Biginb or CRM for Solo Business

Hi!
I have just started using Zoho One and want to try and integrate my businesses all into one system.
At the moment it is just me and I have several sub-micro busiensses.
At the moment it works just by categorising in Books and Inventory, as I want all the info in one system

As it is just me, and mot of my revenue is online sales (ecommerce) etc, is it better to go with Bigin or the full CRM.
I think the full CRM is overkill for what I need.

I would like:
- Order info from customer to come in so I can see the best customers and best selling products
- Able to see if I send them email newsletters from Campaigns etc 

I don't need the moment Funnels etc timed tasks.

Another question is if I do want to move to CRM in the future can I move my info from Bigin to CRM!

I think Bigin is best for me being basically just me - just want to see what people with more knowledge think