Please let me clarify this. If we do get a full Linchpin project (as in Linchpin Core and Extra from our price list) from a customer in France we are happy to translate the used plugins in French within a 6 month time frame. This is how we handled this with other French customers so far. This would mean, that you need to sell the first project with English software surfaces. As soon as an order comes in we will set out to translate the content.
We will not however translate documentation and marketing material in French. We do plan to translate the Linchpin website in French but are still searching for an appropriate translator at this point.