Should I go for this job if it is offered to me?

I sent an email with attachements to apply for a job in Rangsit, Thailand as an ESL/EFL teacher at a local school.

I sent the email to apply back in June, and the head of the English department asked me to go in for an in-person interview, on June 20th. But I could not do it because I am not in Thailand, I am in South Korea and I had to stay for work. So all I did was tell him that I am available for November and I gave him my Skype ID.

Then 4 months later, I got an email from this sae person telling me that the position is available for November. I agreed to do a Skype interview with him. However there is one issue. I was diagnosed with Hodgkins Lymphoma in February, I was prescribed chemotherapy and I finished all 6 cylcles of chemotherapy by mid-September. Then the doctor told me that I have Lymhpoma t-cells where the tumor used to be and concluded that I need to get more treatment, particularly radiotherapy and an intense chemotherapy.

My contract in Korean ends on Oct. 31st, and I will head to Thailand on Nov. 1st. (I may just be there for 2 weeks before I should go back to Canada). My question is, once I do this interview on Skype, if he offeres me the job, should I take this offer or not?