I have been using BLC2 for a few years now in my 223 But I only shoot that gun during the rock chuck season here which has moderate temps.
I was shooting varget but I got better groups, velocity and my SD with the BLC was only 9 fps. My load is 1.5 gr under the listed max so I would hope it would be fine
For your circumstance, that load should be just fine. I think CFE will burn cleaner and leave you with a less copper fouled barrel while at the same time giving even better velocities etc.. But hey if you got a good quantity of BL-C(2) by all means Use it first!