It's possible to be fast enough to not wait for the robot at the beginning.

Other thing that is possible (don't have video): cboost between the two squids before boost2 so that I somehow get through without killing them

I know its possible to beat the robot at the beginning, I found the strat to be too precise, and couldnt be bothered constantly resetting over it lol. Havent played it in a long while so can't remember what youre talking about for the second part, but all I know is that the game is unoptimised and there are many strats to be found, with better use of boosts so good luck to you.