I understand you might be not very comfortable in an airplane (in general), and I respect that.
But your fears about the DC10 are a complete non-sense. The disasters you mentioned happened in the 70's and 80's, and only extremely stupid people would have not taken any corrective action to make sure these accidents won't occur again.
In today's airline business, I would be more careful regarding the choice of an airline vs. a specific airliner. All certificated planes are safe, only the people who operate them (from management to flight attendants) are sometimes total wankers.
Enjoy the -10, it's a great plane !