Is it insecure to upload Keepass database to Google Drive, Dropbox or any other file service in the cloud?

I’ve read this answer in Security Stackexchange: https://security.stackexchange.com/a/45337

So, I feel kinda confident if a put a big number of PBKDF2 iterations, like 10.000.000, it should be OK.

My master password is based on diceware, but is not very very long because I need to remember it.

What do you people think about this?