"What type of cannabis will be the most helpful for pain. sleep, etc?"
I am sorry to hear about your treatment. Cannabis can certainly be helpful for both pain and sleep. Rather than the type of cannabis, start first with a chosen method of application.
For sleep, I would recommend an edible product, and if you can find one with a strong indica as content. Edibles tend to come on slower, and may help to keep you asleep longer. Any indica strain will suffice. There are several edible products designed specifically to assist with sleep. Your location will determine what is available to you locally. I would suggest you find a good local dispensary and see what they carry.
Here are some good choices for products that will help you sleep: https://www.hellomd.com/search/sleep/products
For more information on sleep related products: https://www.hellomd.com/topics/insomnia
For pain, you might want to try a combination of an edible, along with a vaporizer. Vaping cannabis has an immediate effect, and so this could be beneficial during waking hours.
Here are some options for vaporizer products: https://www.hellomd.com/search/vaporizer/products
Hope this helps and best of luck with your treatment.
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