A career ago, I and a large number of other young pilots of the time, transitioned with around 230hrs tt from Beech Barons (160kts) to Tridents (0.86M) fairly successfully.
In my case, for the first few sectors, I hadn't a clue where I was for most of the flight. DME had yet to be installed (even though it existed, the airline had a dispensation not to install it!) and the doppler thingy frequently went into 'memory' mode or ran away with itself.
But I and my contemporaries prevailed, thanks mostly due to the kindness and patience of the fatherly, experienced Captains of the day. God bless them.
So Mr Skarskate, don't be so dismissive and discouraging to an aspiring starter.
And young Drewteh, don't be put off aiming high. Give it a try. Nothing ventured, nothing gained Lah!