10w halogen is around 200 lumen. IIRC
The cutter kits are the easiset. MR16 is a direct replacement for the lumi lamps. A single xpg will be around 300 lumen. Triple xpe around 700, MCE around 900. again IIRC
You need the correct driver as well. each led has an operating volatage of around 3.7 v. so a triple will need 11 volt ish – but you can have a boost power source to get this from a 6 v battery
A single is 3.7 v so runs from either a 6 or 12 v battery with a buck power source
the mce is 4 leds in one unit.
epe gives the tightest beam and the greatest range of optics, xpg not far behind and a lot more light per bit of electic. MCE is hard to get a narrow beam