I like my ASUS board that lets me flash the BIOS without having a CPU or any RAM. Some processors may work (not well,) without the BIOS. This was the case when I installed a newer Athlon 64 X2 into an AM2+ motherboard several years ago. It posted but it wouldn't boot. Once I flashed the motherboard it worked great, but you run the risk of not being able to flash the motherboard if it decides to not even post with the CPU.
I take it that you don't have a slower 1155 chip to rely on just in case.
Worse comes to worse, if you want to make sure you can flash it (or you end up going with IVB and it doesn't boot,) you could always get a cheap SB chip just to flash it, like a G440.
Intel Celeron G440 1.6GHz LGA 1155 Single-Core Des...