Depends how ur school semester is. We had first sem of first year as basic sciences (FA had a decent amount in it). Then second sem we started organ system and I did need all those resources. BRS physio will help if you have a basic science block\
Do not buy FA until after jan, thats when a new version of FA comes out. If u can get one through ur library, use it. I recommend starting sketchy micro as early as possible, go through it, make really good notes.
Uworld is hard to say. Some ppl only buy it during isp, others buy it 2nd year, some buy it 1st year. I bought it 2nd year, i used UsmleRx in first year since it was cheaper. If I had to redo it, id pay the extra $$ for uworld. It truly is an amazing learning tool. So much info in it.
It all depends on how much $ you are willing to invest in your learning.