Problem with virtual orders and standard orders in 1 basket

[EdytaK]

Hello

I'm building a photography shop. I offer to my customers 3 category of products:
1. Physical product (Standard product) for example print on paper or canvas
2. Virtual product - download of RF product pictures (stock pictures)
3. Virtual product - booking for services (wedding, portrait session and so on)

They all work fine separetly, but if 1 customer want to buy 2 or 3 diffrent types of products in the same tansaction this is where I got problem. 

First, it dosen't allow to choose a carrier on the order. Physical products are shipped via Royal Mail (standard free shipping) and I also have courier option (option extra paid) and international shipping (option extra paid), while obviously virtual products have no carier and it's free to download them. On the checkout my customer gets odd looking radio button saying free shipping without icon and without option to change a carrier or choose diffrent carier for diffrent products.
Second,  once the payment went through the customer gets 2 diffrent order confirmations,2 diffrent invoices and 2 diffrent paypal confirmation. And all those products were initially in 1 basket as 1 order. Is there any way to make it 1 order, 1 payment and 1 invoice? It is looking confusing and it's spamming mailbox of the customers.

My website is still a work in progress and I can see all of this problems when I do test purchase. I'd love to sort it all out before I go live.

Many thanks for your help.

Edyta

I'm using Prestashop 1.6