If you don’t use the same ingredients the beer will taste different. Processes matter as well. That’s why so many commercial breweries will give out their recipes. They have proprietary ingredients and processes they use that are unique. It’s their market distinction.
I, for one, don’t care for Barke Pils (or many other Continental Pils malts). You may like it. Many do and you may as well. My son said, “Oh, I’ve had beer that tastes like this before.” He didn’t say if he liked it or not — just that he noticed the flavor. To me, there is a distinct grassy, or hay-like flavor that I can live without. There are many more base malt flavors I do like so I go with them. That’s just me.
The only way to know is to brew it as-is, then make substitutions to see if it gets better or worse.
I recommend using a mfr yeast pitch calculator to determine the qty of their product to use to get expected results.
BTW, Italian Pils is a German Pils w/dry hop. The result is pretty darn tasty. The BJCP recommends entering it as a ‘mixed style’ (kind of a catch all bucket of mutt beers that don’t fit well into other categories).