That is a very difficult question. Whether you are safe to travel would depend on your post-Covid symptoms.
Is it possible for you to get a physical, with an electrocardiogram and a basic pulmonary function test, to make sure your heart and lungs are safe to travel? And ask the doctor if it is safe to travel?

Much of the time, there is little evidence of organic damage post-Covid, and the problem is with the virus having caused a host of symptoms, including fatigue. Only you know if you can tolerate the rigors of a long trip.

If you decide to go, certainly get tested for Covid and wear a good mask throughout the trip so you don't catch it again.

Can you get a physical where you are now?
Sue