do the whole thing in one command

nodebuilder

@@ -1703,12 +1703,7 @@ if [ ! -f "${BITCOIN_CORE_CONFIG_FILE}" ]; then
   set_bitcoin_core_option 'server' '1'
 fi
 
-INITIAL_BLOCKS_SIZE_IN_MIB="$(get_directory_size_in_mib "${BITCOIN_DATA_DIRECTORY}/blocks")"
-readonly INITIAL_BLOCKS_SIZE_IN_MIB
-INITIAL_CHAINSTATE_SIZE_IN_MIB="$(get_directory_size_in_mib "${BITCOIN_DATA_DIRECTORY}/chainstate")"
-readonly INITIAL_CHAINSTATE_SIZE_IN_MIB
-INITIAL_DATA_ALREADY_SYNCED_IN_MIB="$((INITIAL_BLOCKS_SIZE_IN_MIB + INITIAL_CHAINSTATE_SIZE_IN_MIB))"
-readonly INITIAL_DATA_ALREADY_SYNCED_IN_MIB
+INITIAL_DATA_ALREADY_SYNCED_IN_MIB="$(($(get_directory_size_in_mib "${BITCOIN_DATA_DIRECTORY}/blocks") + $(get_directory_size_in_mib "${BITCOIN_DATA_DIRECTORY}/chainstate")))"
 log_info "Found data already synced... $((INITIAL_DATA_ALREADY_SYNCED_IN_MIB / MIB_TO_GIB)) GiB."
 
 free_space_in_mib="$(get_free_space_in_mib)"