Hello! I am about to enter sophomore year and have dealt with a bit of anxiety and doubt this summer because I don't know how 'competitive' the courses I've chosen would be considered when measured by Ivy League Admissions' standards.

I am taking
AP Environmental
AP Art History
AP Spanish

(having taken AP Bio and World Hist. Freshman year)
Three courses is the norm among other soon-to-be Sophomores in my school, however I am afraid that my schedule will pale in comparison because those three courses I've chosen are (I've heard) on the softer-end of APs.
I have two questions for you experienced peeps out there: What do you believe is a good number of APs to take in Sophomore year- considering my Ivy goals? Should I supplement my current schedule with more AP classes to make for a more competitive course load?

Any and all advice would be enlightening, as I am just so lost when it comes to this whole thing.