1stly, I am impressed by your audio visual set up, in my circle, I am a computer obsessive, sound maker, video maker. I am but a babe in the woods, compared to you, well done for taking an obsession to a resounding success!
2ndly, health - what a bummer, like most here, we're all getting close, to the river Styx and it sounds like you were looking for Charon the ferryman.
My 10¢ on travelling with health issues - is that if I do travel, what sort of trouble do I cause should something happen on the plane or over there? On the other hand if I stay it could happen here, and then I'd miss my, likely last chance. I've been holding off for health issues for the last 7 years, but now I'm clear for January.
So I reckon, if the doctor says you'll survive the plane, then go, you can have taxi drivers and others do the lifting and you can always sleep in a seat with the good meds you will have.
Cheers and good to see you're still with us.