Chorizo potatoes or patatas braves con chorizo is a traditional tapas dish kicked up big time. The chorizo is Spanish. This is not a good place to substitute Mexican style chorizo.
Aioli is all about personal taste. One clove of garlic is pretty garlicky but if you like more or less adjust to taste. Traditional aioli is 100 percent olive oil. That's pretty assertive. A mix of olive and vegetable oil keeps the character of aioli but lightens the flavour somewhat - again do what you like. It's your kitchen!