Skip Angel and get Loki instead. Then just decide if you want to make Quicksilver even better or instead make a trash char to a glas-canon with very good damage but low survivabilty.
Other than being able to proc your damage proc more easily, Angel’s new uniform isn’t that much of an improvement. Quicksilver’s uniform passive (10% chain hit damage increase) is quite noticeable and makes his damage output better, but Quicksilver is already an above average A tier character without his uniform and frankly, unless you’re going up against a very high stage of WBU or you’re planning to use him in ABX, the uniform isn’t needed. Both War Machine and Loki’s uniform transforms a garbage unusable character into S and A tier character so these two will give you more bank for your buck.