Yep, just do it the same way as you were doing stuff before. Copy to the root of the SD, extract the boot.img, flash it as you did before and flash the zip file in TWRP.
It should all go smoothly, but I'll be away for about an hour if you want to hang on before flashing? First boot can take about 10 minutes btw so don't worry if it appears to hang. Any longer than that, reboot and wipe the cache.