These are fine! The reason I choose the bulbs independently from the light, is because I am using some 3.7V rechargeable batteries. Some of the bulbs they used to sell didn't work well with the voltage of 2x3.7V, so I want to make sure that I get bulbs which can accept more than 6V. The ones you got are fine.

I prefer the L2T body, which has the rubber ring in front of the rear cap, it helps me hold the light better.