I was in the same boat as OP, but am going Full Monzo - completing on Monday 
What got me to go #FullMonzo in the end was that in actual fact, I still no what I can and can’t spend using budgets in the summary tab. Although you can have granular budgets for each category, you can also just set an overall budget - set this to what you will have available to spend in the month, and then use Summary to see how much money you have left instead of the Pulse Graph (or whatever it is called).