Woo commerce additional product options

I am looking for someone who can help implement an additional product option to our woo commerce site. We would like to allow customers to have a basic bit of text added to their product.
This would need to work only for certain products. We would like them to have the option to add a basic piece of engraving to their product. There needs to be a check box or drop down with the question would you like your product engraving, the options being no, just text, or custom.
IF they click just text, there then needs to be a field where they enter upto 8 Characters into the box and it is submitted with the order, it also then adds £4 charge per number of that item to the basket.
If they click custom, it charges £10 and asks them to email their design to an email address but still adds the charge to the basket.

There will need to be a link to the the "Engraving" page on the website which provides them any further information or FAQ's about the service.

In order for this to work with our stock system IT needs to add an additional product to the order to pull through into the order management system. Our current solution doesn't and means every order has to be checked manually



We would like this implementing within the next 7 days.