Analyzing companies that does a lot of tuck-in M&As?

Hi everyone:

I'd appreciate your insights on how you would approach this analytical problem! Supposed there's a public company that has clear unit economics driven by # of stores. It can cold-start a store, and it can also acquire competitors' existing stores. It often does tuck-in acquisitions where it acquires competitors stores.

I am trying to build out the company's unit economics. For its larger M&As, the company would issue an updated outlook for that year based solely on impact from the acquisition. Is it right to understand that the increase in revenue from the new guidance is just from what's expected from the newly acquired company for the remainder of the year? In other words, if I want to know what was the revenue and EBITDA of the stores it owned (excl. the stores it just acquired), I can just use (year end reported revenue - increase in revenue expected to have resulted from the merger from the updates)?

Are there good guides / sample models / Breaking into Wallstreet videos that can be helpful on learning how to do this please?

Thanks