Santee is indeed a great area and I have no doubt you'll love it here should you decide that this is where you would ultimately like to live. My name is Shawn Perkins and I was prompted to answer your question by the Trulia system, but I see no question that needs to be answered.
I have been in the mortgage business for 19 years, and while I can handle real estate financing anywhere in California, I have specialized in East County (Santee, El Cajon, Lakeside, La Mesa, etc...) for every one of those 19 years. I live and work in Santee and would love the opportunity to answer any questions that you have, so feel free to contact me if you feel there is anything I can do to help you and your fiancee.
My mobile number is (619)994-1110 and my e-mail is Shawn@YourFavoriteLender.com.