TerriJ -- suggest that you first get a check of your land by a soils engineer. Then discuss what kind of house you want to build and after that find out what kind of foundation that house needs in that particular location.
After that you can work with your architect to select and design a home that fits your budget as well as your needs for safety and comfort.

AC specific info - you will need a building permit (for anything including pilings), and building permits are good for a year at at time. Suggest that you check out the costs involved in the renewal process, and consider the implications of changes in building codes over time. Might want to wait to start until you can construct foundation and a basic shell at one time. Along with the issues of permits, you will find that start and stop construction usually costs you in ways you don't anticipate.