Hey im a Y2 A&F student from uol.
1. Not anyday, but there are a few diff classes for you to choose, e.g., POA 12-3 Monday; POA 4-7 Friday, then you can pick one of them, but note that the lecturer might be diff. You will not know which lecturers before hand, but you can go and ask around and email the lecturer for their timetable so you can pick the lecturer u want during the SSCE. But also note that there is limited slot, so act fast (esp those good lecturer) HAHA
2. Yes you can pick other mods too, and it is advisable. But some ppl prefer to stay in school longer, cos taking lesser mods means u can focus more (and potentially get higher marks?). Just note that you only can pick 4 mods/year (but you can pick 5 for you final year) and remember to check if there is prerequisite for the mod u wanna take.
3. ECONS: mine was william, pls avoid AHAHAH, i heard chen aidi not bad; Math1 very ez, doesnt matter which lecturer actually (i never attend but still can get A); POA mine was Daniel Tan and he is quite good, but he is a bit naggy cos he's old HAHHAH