My wife did build one back in 2013 and I can see that they did update the kit with good things.

1: The wind shield is now fixed in slots in the deck and not just glued to the edge of the cockpit opening.
2: There are now padding and leather for the seat included.
3: There are a few etched details for the instrumentation, steering wheel and step plates for the deck.
4: There are notches at the break off parts that will help in fixing the sides when gluing them in place.

Choice of motor:

I'll use the same set-up as my wife's which is:
Graupner BL Compact 260Z 1380KV with a Graupne ESC 18A FWD and REV. The shaft is replaced with a Robbe 4mm (no 1442) and a 33mm 3 blade prop from Graupner (GRA-2299.90) as the one provided is a flimsy part that will not withstand the motor set-up. It will be running on LiPo 2S but if one need a rocket it can run on 3S. 😱

Been using LiPo's the last 5 years without any fires or explosions. They should just be treated with care, balanced when charging and not overloaded. 😎

BTW the last picture show then new vs. the old kit of the Classic