You are doing the same upgrade as I have done. it is well worth it and i have noticed the benefits.
You need to check on motherboard company website to see what your board will support upto or check the manual. Same with the heatsink and fan.
I got a motherboard bundle that included the cpu,fan and heatsink so new compatible. I have a copper heatsing that keeps cpu around 40c.
Processors are very easy to fit but need to be careful in handling.They will only fit one way and you need to line up correctly and should just drop in. I do find heatsinks a fiddle tho.