As I see it, the risk that needs to be managed is missing the one hour check in deadline for the DL TPAC flight. KE should be able to check the bags through, but if the first KE flight is delayed, the OP could be booted from the TPAC flight if check in hasn't been accomplished.

BTW, you can do OLCI on the website and ask to be able to pick up a printed boarding pass at the airport. This should count as having checked in even without a paper boarding pass in hand, although KE employees might resist printing a boarding pass too close to departure time.