The decision in plain terms
Separate money spent before opening from the reserve needed to keep the shop operating afterwards. A lease deposit, refrigeration fit-out and the first months of payroll have different timings and risk profiles.
The financing plan should distinguish setup expenses from the cash needed to sustain the operation after opening. The time before break-even is uncertain. In Scotland, that decision should use local evidence and the actual obligations of the proposed site rather than estimates borrowed from another country.