Brommieplus new 11-25 P-Line conversion kit

So as the title says..

Brommieplus has just released their new P-Line 5 speed upgrade with an 11-13-17-21-25 cassette.
I am thinking about pulloing the trigger on this one.. it's a soup to nuts conversion for $175

Comments ?? Heres the link. Brommie Plus 11-25 5 Speed Kit