Your last post causes me to ask a question. Aren’t you trying to bite more than you can swallow? To take a bank loan in order to buy an aircraft? Isn’t it why we are all in the sheXX?
It is nice to have an Aerostar, I know some people who did the move and bought one, I also know two who are trying to sell it but can’t. I don’t know what you do for living, but do you need all those empty/rarely occupied seats when you go places? Are you looking to trade one illness with another? Buy one when you can afford it, or if you want to sell your while it is still ok why not to consider something else? Maybe a PA30/39? It is smaller, it is faster and burn much less fuel than the 520.