Stop worrying about transferring to a prestige college / Wall Street target now. As a sophomore level transfer, your high school record that was barely good enough to get into UCI off the waitlist will keep you out of the prestige colleges you desire.
Now, if you can pull a 4.0 college GPA in your first four quarters at UCI, that can reduce the importance of your high school record if you choose to apply as a junior level transfer somewhere. Come back if you have a 4.0 college GPA at UCI by then, and if you are still really interested in transferring.
Also, since when was $300k per year pay a bad thing?