If you require specific information regarding managing your IDDM when running there is an amazing website called runningsweet. This has loads of advice for diabetic athletes for all sports but specifically about running. Fueling runs can be problematic especially initially your BMs can plummet afterwards, make sure you keep an eye on this and speak to your specialist nurse who may also be able to help.
There is another app you can get called "find friends" which I use. It works very well and you would be amazed how many times it is useful like timing dinner when husband on way home from work. I also like the fact that he knows where I am on long runs as I have a habit of falling over ( 3 times recently)
I didn't like the soft strap so wear it over the top of a sweat band and it is very comfortable. I absolutly love my 410. I upgraded from a 305 that I had had for 4 years after it locked up on a marathon and gave me severe anxiety. It finds satellites much quicker and is very easy to use when you get used to the bezel.
As a GP who also runs marathons and the odd ultra hopefully I am in a good position to answer. NSAIDs are not a good idea during any long distance event, and especially with ultras, for 3 days after. During endurance events the kidneys are working harder than usual to get rid of waste materials whilst conserving water; also most people are moderatly dehydrated at then end. NSAIDs can damage the kidneys and this is more likely if they are a bit knackered anyway. NSAIDS can also cause inflammation in the stomach especially if not taken with food. Paracetamol is safe. I know nothing about the pain relieveing properties of root ginger but I cannot see it being harmful.