Temporary use of remote nodes is useful in order to use Monero immediately (hence the name bootstrap), however be aware that when using remote nodes (including with the bootstrap setting), nodes could track your IP address, track your "restore height" and associated block request data, and send you inaccurate information to learn more about transactions you make.
Long payment IDs are obsolete.Long payment IDs were not encrypted on the blockchain and would harm your privacy.If the party you're sending to still requires a long payment ID, please notify them.