Congrats!
I see no problem with that. The seed is used only to decrypt your wallet locally. Nothing goes outside.

When I use chaintools, I usually construct all the commands first into a text file, carefully selecting the commands and input data. 
So will not be errors when is executed.
Chaintools is a life saving tool, I wonder when we will have it integrated into more LND frontends like Zeus, Blixt, Thunderhub, Breez etc for easy recovery by the user.