U.S. News provides “selectivity ranks,” which should offer you a rough sense of comparative difficulty of admission. Below they are listed for your schools of current interest plus two others:
︎5. Hamilton
︎12. Vassar
︎19. Colgate
︎28. Denison
︎32. Union
︎34. Bucknell
︎41. Lafayette
︎59. Skidmore
︎68. Trinity (CT)
Note that aspects such as whether a school considers financial need in admissions decisions (i.e., is “need aware”) or whether a school favors male or female applicants can substantially impact results for individual applicants.
Overall, it appears you have added needed range to your list. You might also consider Trinity (CT) and, further afield, Denison. Each offers a computer science major.