Depends on whether you need a bigger factory or not. It may be better to replace an existing factory's image with this (which looks amazing by the way).
But you can try looking at the statistics for the mega-factory in the REALWORLD mod, which I have attached:

- MegaFactory.png (7.15 KiB) Viewed 1486 times
But normally the reason why some of these mods have bigger factories is that many of the products have a greater demand in retail and for related and semi-products. Bigger factories have the disadvantage of having bigger inventories, higher building and maintenance costs and take up more land. In the case of your mod it is service related, so you might not really need bigger factories as all the production is taking place in the Coffee Shop.
A similar issue as well with Apartments/Commercial Buildings. I added additional buildings to Magitek when I realised that city populations were getting bigger.
By the way you can add additional building types for R&D and Logistics - the buildings are exactly the same but some visual variety is good.