Sorry but these are poor choices for simple minisites. They don't mean anything and thus will take extra effort to get any meaningful traffic.
If you aim to develop AND brand them as something that's a different matter, but again, that will take extra time and $.
"I am planning to launch many mini sites and at the moment looking for good domains and development plans"
Good domains for development that don't involve having to spend time, money and effort branding are keyword and generic domains - not these off-beat brandable types.
As for appraisal - all reg fee.
Good luck with your domains no matter what you choose to do.