I just completed my Permanent Residence in Panama under The Panama Pensionado Program - figured a Company attesting me being pensioned with 1000$+ per Month - worked perfectly fine and did cost me only one time 25,000$ instead of putting 200,000$ in Panama Real Estate or 200,000$ as Fixed Term Deposit with a Panama Bank under the Panama Friendly Nation Visa.
I guess that the Immigration Process itself is the same and I can help you or at least provide you with feedback with the single steps I went through.