<human>: Long time reader- throwaway for privacy reasons. 

I am in my early 30's with a spouse and 3 young children. I spent much of 2014 and last year in the hospital fighting a rare and aggressive stage 4 cancer. 80+ rounds of chemo, 30 radiation treatments and 7 surgeries later, I am in remission and plan to stay that way. My specific diagnosis does have a tendency to reappear within two years of initial treatment however. Knowing that, I'm curious what recommendations you all have to prepare for the worst from a personal finance perspective. 

A little about our current situation-

-About $115K income per year between the 2 of us. I bring in 90% of that and my wife contributes the other 10%.

-We have 3 children under the age of 6.

-I have a life insurance policy in place from before cancer (in hindsight, I wish it was for a much larger amount).

-I have good health insurance and no medical debt from my previous treatment. At most, we will have $10K in medical expenses per year unless we try some type of radical treatment that isn't covered.

-I max both my spouse and I's roth IRAs and my 401K.

-We are in the US.

-We have approximately $100k currently saved for retirement.

-We have approximately $50k saved for a rainy day/medical fund.

-We have a mortgage (about 50% ltv) and a small car loan and no other debt.

-My spouse recently returned to school to get a bachelors degree in a very marketable field. Partly because she has always wanted to and partly because it's possible she'll become the sole breadwinner. 

-We both have excellent job security.

Considering all this, what are some things we could do now to help our family's future and prepare for the worst (cancer re-occurrence and death)? Would I qualify for any private disability and/or additional life insurance? What else?

Can you give me a shortened version of the text?
<bot>: Had cancer, now I don't. It might come back and kill me. What should I do now to prepare?