My wife and I are interested in building our retirement home in the Florida Panhandle. We have "drawn" a plan based on a house we rented for a week at a time for years for vacations. Do all Modular Home Companies provide "Engineered Plans" from Architects on staff or do we need to hire an Architect first to create an approved plan? After reviewing your website, it appears we have several choices of manufacturers in our area, Clayton, Palm Harbor, Nationwide, All American, any others you would recommend would be appreciated. Thanks!