Try and talk to the other seniors? Last time I joined (fully remote) I asked all the other seniors for a 1 to 1 - not all replied but I learnt a huge amount about past projects, what people would have done differently and where the pain points were. Meant I could get a jump on the issues rather than find out slowly. You also get a sense of the weather and who you can vibe with. Oh yeah, taking notes about everything!
sonic potions has an analysis of the cpu timings here https://sonic-potions.com/Documentation/Analysis_of_the_D650...
Theres also some nice articles about the diode ladder filter in the 303, similar to the one in the vcs3 https://www.timstinchcombe.co.uk/index.php?pge=diode2
(I built one and as far as I know the Pixie CPU was the 303 code + MIDI)