Those XT brake levers are lovely, I have a set on my Orange.
I would be tempted to try and re furbish the XT stuff unless your LX kit is in really nice condition.
Powder coating as we understand it is where the frame is heated and a fine grain powder of paint granules are sprayed on to the frame, they then melt on and produce a tough surface.
The firm I use spray liquid paint onto a cold frame and this is then baked to about 70 degrees centigrade to harden the paint. This is repeated many times, usually 2x primer 3x paint and 1x laquer to give the final finish. A bit pricey but very nice all the same.
My own Kona project has hit the buffers as I am waiting for some V brakes which have enough adjustment to reach the skinny Campagnolo Atek rims I am using! The Orange is being picked up tomorrow!
I am well used to translating from US to UK as I am a US citizen by virtue of my parents but have lived here most of my life so any queries just ask!
Somerset, like 'Heartbeat' with newer cars!
Retro MTB: 1992 Cannondale 3.0 Deore XT M730. 1992 Marin Pine Mountain Deore DX M650.
Retro road: 1992 Eddy Merckx Corsa Extra Telekom Shimano 600 STI. 1993 Dyna Tech Ti.
Modern: 2006 Wilier scandium Ultegra 6600. 2014 Wilier GTR Ultegra 6800.