Thanks for the info. Turning over our US passports adds a degree of complexity I hadn't counted on. Our plan was to come down there on our 30-day visa, take care of business at the immigration office and then return to Seattle to sell house, cars, furniture, etc. It sounds like it might take more than a couple weeks to get our finalized permanent resident visa from the immigration office even if we come down in August as planned.
Per your advice I will definitely contact Azenena Bateman and most likely retain her facilitation services in this matter. Thanks for the referral.