Yes, all our modules are multi-language and multi-shop compatible. Configurations may change for each shop.
For Stuart and Deliver.ee, you can also define a pickup point per eShop.
About Magic Redirect 301, you can define which redirections will be used by which eshop. Note that this is automatically done by the system when creating the rules, you will not have to manage the distribution of the rules yourself.
Regarding URL Rewriter (SEO, it supports each of the different eshops separately to avoid creating duplicates.
Lonelystock (Product Isolation) separates each product in the shops but the stocks being managed in a common way in Prestashop, times and quantities are managed together. We simply followed the usual Prestashop behaviour with regard to stocks.
Simple Sitemap is natively made to manage all the complexities of multi shop and multi language, even at the level of other plugins (blogs …) when it is possible of course.