I suspect Mrs. Trump's education level is greater than that of many first ladies, Martha Washington for example was not a college graduate. Nancy Reagan had a degree in dramatic arts.
Class and culture are not limited only to those born to affluent families. Rosa Parks was not a college graduate and yet we celebrate her courage every year and she stands out as a role model to girls of all races. Are you suggesting that Ms. Park's lacked class and culture?
As for Mrs. Trump's modeling career, your leading lady democratic supporters are such people as Madonna, Meryl Streep and Ashley Judd who have all either performed nude or even in simulated sex acts on the big screen. Hypocrite much?
In fact, I find it refreshing that we have a first lady who despite lack of opportunity rose so high as to success long before she met and married her husband.
As for the age difference - Age is relative, My father was 21 years senior to my mother & they were married til' the day she passed away 24 years latter.
Perhaps you should consider a self-bias assessment - is your ignorance based in anything or just your ignorance?