And that is from a Hasselblad guru!
If you meant me (i'm assuming, since i was quoted), hold on a moment.
I was just musing (in amused bewilderment) over the "at your time of life" advice.
Repeating it to see if when saying it out loud, it would make sense.
I mean, even ignoring MF, the thought to tell anyone he/she needs a Minolta would not even enter my mind.
I think the OP should keep as much of his kit as possible.
You have what you have. And don't need anything else.
So unless it is absolutely impossible, hang on to all of the lenses at least.
The second body is redundant, and could go. The teleconverter too is of little or no use. But you will not get anything for it.
But i'm, repeating myself!