You pay what you can afford. 1100sqft unit requires a min. of a two ton unit. prices range from 2100-2900 depending upon the seers of the system. 13 seer is the min. the law requires and for your situation with 1100 sqft. do not worry about the seers as long as it is to code. the bigger the house the more seers for economy.
In general, a college is an institution of higher education that may stand alone or make up one part of a university. There may be several colleges that cater to a variety of specialized professions in law, medicine, the liberal arts, etc. on a single university's campus.
University don. A don is a fellow or tutor of a college or university, especially traditional collegiate universities such as Oxford and Cambridge in England, and Trinity College, Dublin, in Ireland.