Yes, you can import your temple wallet to Kukai without removing the two existing addresses. All you need to do is open Kukai, click on the “Settings” tab, and select “Import Wallet”. You will then be asked to enter your seed words from the temple wallet. Once you have entered the seed words, Kukai will generate a new address for the wallet. You will then have three addresses in Kukai, the two existing addresses and the new one from the temple wallet. It is important to remember that when using seed words, you should always double check the source of the software you are using and make sure you don't leak them to anyone. Additionally, you should read the pinned message in the Kukai telegram room, which contains a very serious warning about the dangers of using seed words.