Hi Larry,

It sounds like Tuesdays and Thursdays might work for your cross-training days and then you would still have a scheduled rest day over the weekend.  It really depends on your schedule, and what works best for your personal conditioning, so if you prefer to take a break during the week, then just add a weight-lifting day on Saturday or Sunday.

Best of luck on your 10k training and if you have the opportunity to get in some additional 5ks or 8k races in advance of the 10k, that might be of assistance to better prepare. 

Others may have different advice Larry, and I think it is certainly okay to do other cross-training on running days, depending on your personal fitness level, time constraints and so on.  I was just encouraging a regular, daily balance of activity that might best meet your needs and training goals based on the Mon. Wed. Friday routine that you mentioned.  I do something every day, but it is important to listen to your body in terms of rest periods. 

The only other thing I can think of is your distance training, so maybe choose one of your three running days to work on that.  If you are racing on a Saturday, I would say push out the miles on the Wednesday prior, for example.  (Tuesday would be better for a Saturday race and Wednesday for a Sunday event), but again the level of intensity depends on your individual circumstances and expectations. 

Hope this helps to clarify and best wishes!