Xenium ICE V1.6 install

[Neipas02]

Gotta 1.6 I am going to attempt to mod (with the help of experienced hands)
not my own.. Anyway I'm figuring you solder directly to the lower portion of the pin header for the LPC rebuild. I was just wondering how small are the actual solder points on the board. I know we tried a PS2 at one point and they were ridiculously small. I know theres 2 methos to attack it from. (top and underside) underside apparently a novice angle. Difficulty level?
And the set of hands are about 8 years experienced. Only he's not used to dealing things on the microscopic scale. Thanks..