Compression question

Well, it looks like we will have the 318 rebuilt. I don't have the space or ability to do it our selves. This is a going to be a driver but I was going to put the 340 cam in it. We are running the LD4B intake with a 600 edelbrock. They are going to rebuild my heads. I've read a ton of threads and I think this what we are going to do. Unless, there is something I should be doing while at the machine shop?

Thank you all