Personally, I think you will struggle to earn enough revenue to cover your investment and time. The MCS (min cup sale) for any venture is 100+ per day as a starting point for part-time and then 300 - 500 for a full day. Modern times = most people in a hurry, don't have time, spent too long reading on their smart phone during breakfast, already have a machine/appliance of some type at home - whether it's a capsule, pod or other. Also, don't underestimate the influence of a demographic such as comparing the propensity for city workers that buy coffees in higher numbers versus the outer suburban workers/residents who tend not to indulge so often in takeaways and only treat themselves to the occasional weekend visit to a cafe, or rely on instant. What's not clear in your statement - how many other outlets in competition in the area, especially Maccas, 7Eleven, cafes, etc. and any other mobile operators. Are the customers coming to pickup the beverage from you or are you trying to deliver it to their front door (which is unbelievably difficult) like an Uber Eats ? There are ways to research and study whether something might work - sit outside a few cafes in the area and see how many people are ordering takeaways.