I did all this, way back in the day when I had a TC5. What you will most likely find, is that the losi lcd's are not very durable at all. The pin hole on the barrel will get ripped open very easily, and the heatshrink is prone to damage which can lead to the driveshaft falling apart.
Having had a TC6 and the reflex driveshafts, they are 1000x better than the LCDs. The tc5 steering blocks/chubs are the same as the 6 (different than the 6.1 though), so you just need the 5x10x3 bearings (avid for $1/per). RSD also has hexes for $5/pair. IMO its well worth the extra $ for the driveshafts to be able to know you can hit stuff and still finish a race