Deleting peers.dat is not forcing your client to redownload whole blockchain but to find new peers from scratch insteadOK, reindex is ok if restart wont work, and if reindex wont work, shut down client and delete peers.dat , restart
and redownload whole blockchain.
To force redownloading you need to delete blocks folder.
Btw, updated https://github.com/UdjinM6/darkcoin-bootstrap just in case - should take to block 219646 now.