It took a long time to start and synchronize the Wallet. It appears that almost 8gb of files were created in the appdate/roaming/bitcoin folder.

As this is a considerable portion of my SSD:
- Are these files forever needed or can I remove them?
- Will these grow with all new transactions? If so, then they might grow into dozens of gb?
- Can these files be moved if they can not be deleted, without haviong to re-synch?

Thanks!