[Jims5543]

Points are hard 2.5 lb points will be harder. I think 4 hours at 225 will be too dry.

Do you have a diffuser? If so use it.

Go as low as you can stand the moment is hits 160 yank it out, the last 50% or more of your cook time wrap them in foil.

Put a vessel in there with some water in it, to help keep things moist as well.

I am on my 5th brisket and still learning, I was just at a local BBQ joint, the owner an ex touring BBQ competitor. He told me my 4-5 lbs briskets are too small and to get a full size one and see how much better they are. My plan is to get a 10+ lb one next time.

I tell you that because 2.5 lbs is slight and will dry out in a hurry. Keep that in mind as you plan your BBQ session.

Good luck!!