this will also fuck up the pound ? 1 lb = 0.45359237 kg

No, if you use pounds, you're fine. Nothing will change. Thank goodness we never switched to metric, right?

This is a clear and concise article: #^https://www.popularmechanics.com/science/a21472/scientists-finally-redefine-the-kilogram/

The video is particularly informative and fun to watch. I never knew the political reason why the kilogram was the fundamental unit and not the gram.

Together, these measurements meet the standards set by CIPM, which means that the kilogram will be officially redefined in 2018. At long last, scientists will see some stability return to their measurements, and Le Grand K will be put in a museum, where it belongs.

i was reading this...

Various definitions have been used; the most common today is the international avoirdupois pound, which is legally defined as exactly 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces.

#^Pound (mass) - Wikipedia

For the unit of force, see Pound (force). "lb." redirects here. For other uses, see LB. "lbs." redirects here. For other uses, see LBS. The pound or pound-mass is a ungit of mass used in the imperial, United States customary and other systems of measurement. Various definitions have been used; the most common today is the international avoirdupois p...

#^Proposed redefinition of SI base units - Wikipedia

Proposed definition: The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015×10−34 when expressed in the unit J⋅s, which is equal to kg⋅m2⋅s−1, where the metre and the second are defined in terms of c and ΔνCs.

That should be fun to explain to little kids!