You are a clever grown up, an undergrad degree will be too basic for you, they don't give you anything more than you can get just reading the textbooks, but done part time will take years and years and cost silly money. A masters will be quicker, cheaper, more interesting, and probably meet whatever visa requirements you need? Being more advanced they are also maybe better for self esteem? And assuming you are an experienced professional, you will be able to get onto a masters course with that as your qualifying experience, instead of an undergrad, assuming you pick something related (ish) to your field
You are a clever grown up, an undergrad degree will be too basic for you, they don't give you anything more than you can get just reading the textbooks, but done part time will take years and years and cost silly money. A masters will be quicker, cheaper, more interesting, and probably meet whatever visa requirements you need? Being more advanced they are also maybe better for self esteem? And assuming you are an experienced professional, you will be able to get onto a masters course with that as your qualifying experience, instead of an undergrad, assuming you pick something related (ish) to your field