Recommend modules - See list

[annpii]

Hi,

I need to make big changes, so if you can recommended something, I will be grateful

- Invoicing, backorders, stock management - like ERP

- Automatic SEO manager wich use example description

- Cashier to store using Prestashop stock /store manager?

- Updating EASILY from 1.6 to 1.7? (1-click upgrade &migrate pro?)

Main thing is that shop works along to end-users as for retailers - at webshop and store also. Using same stock.

I have check some modules already, but definetly like to hear if you have some experience these add-ons

Thank you!