Hey,
If you plan on taking any other psych courses in later years, you will need to take Psych 1XX3. As for physics, you can always take Physics 1BB3 in any other year you'd like. Math 1LS3 is followed by Math 1LT3, not Math 1AA3. Anyways, you don't need a full year of math so taking Math 1LS3 is good enough, but if you enjoy math, by all means take it for the entire year. I would recommend taking Psych 1XX3, only Math 1LS3, and then you'll have 2 electives left over and for those I recommend Econ 1B03 and Econ 1BB3. It's always good to have electives because your electives are usually classes that aren't as difficult and time consuming as your mandatory classes. Hope this helped