It would definitely have to be done in phases.
Phase 1: Bullzdone east (non pressbox) side, bulldoze north side (family fun zone), and remove track. Move the field closer to the west stands, rebuild east side with more suites (not SEATS!). Rebuild the north size but closer to the north endzone.
Phase 2: Tear down west side, rebuild with more suites and amenities. Remove trailer in south endzone. Extend new west side and integrate it with the football complex. Put a new facade on the football complex in order to blend in with the rest of the stadium.
Phase 3: Add new video/ribbon boards to new press boxes, north side, and south side. New south size scoreboard needs to be set in the corner (similar to TCU) in order to preserve the setting of the hill.
My design services are free. You are welcome KU.