have admissions into Grinnell, Trinity and University of richmond--- what is guidance to select one

I would not sleep on Trinity. The academics are excellent, small and research opportunities. It has long been a feeder for NY business and has well established relationships with business internships located right in Hartford and NY. The campus is beautiful. Yes it is an urban location but that is a positive over rural isolation imho. . The president and admissions have expanded outreach to many excellent and increasingly diverse students. School spirit is high and athletics are top notch in NESCAC. Substance free dorm and students who want to study very hard along with some who party (but isn’t that the case at all colleges)