MSc Applied Economics for IB/PE/VC

Hello, dear. I am an East Asian student who is going to attend the MSc Applied Economics PGT at Bath University (Social Science Faculty, not Management School). My dream job is the FO/MO in IB/PE/VC in London. But I am not sure is it enough. Should I get one more Master's Degree in a more famous Business School?

Other info: Bachelor of Economics(Top 300 of the world, Top 10 of China); 4 year's audit experience in Big 4, Many IPO & M&A projects in China.

My worry: 1. Ranking: The world ranking of Bath is not good enough, though its reputation in the UK is respectable. 2. Major & Faculty: My major is not operated in the Management School of Bath, so I cannot sure that will the employers really care about which school I studied at? How much is the gap between the Social Science Faculty & Business School? 3. Undergraduate Background: It is reputable in China, especially in the financial area. However, its world ranking is not good enough, and may not as known as its reputation in China. How could I fill this gap? ​4. Job Background: How useful my Big 4 working experience in China is? 5. Should I read one more Master's degree in a more famous university, especially the Business School? If yes, is there any suggested Schools except G5/LBS/Warwick？ Thanks All.