Getting insurance isn't a problem. Most will exclude prior conditions. You can buy most BP meds over the counter here. DM me if you want the name of an insurance agent.
I believe they will make you move the old visa (extension?) to your new passport before they will extend the visa into your new passport. I had to do this earlier this year. You would think you could just put the new extension into the new passport but you would be wrong...TiT.
I have in-patient only cover for me and my family. I'm 70 and have had it for the last couple years. We pay out of pocket for all out-patient services. I'm counting on the insurance only for worst case scenarios. The cost is the best value I could find at the time. Not the cheapest but OK. PM me for the name of my agent. I don't want to advertise for him here.