you can delete the .txt after uploading everything.
When you import you will get some messages saying that the image x, y, z, etc already exist. You know that it’s finished when you saw a message with a link saying “It’s done. Have Fun”
Remind to import the revolution slider txt file and also assign has initial page the page called “Home”.
I remember something, maybe you have a restriction that only let’s script execute for 30 seconds. Check with your hosting how to increase it to 360 seconds this way will be faster.
Hope it helps.
-Rui