360 build Ideas

I think I'll just keep the stock cid for budgetary reasons. I do want to start upgrading something though as having the short block completely done, will cost me about 1800 so I got about 700 ish that I can play with. So I was thinking of getting these Hughes roller rockers to start on my upgrading process and a Lunati 60403 cam. I know I need to upgrade the springs, I'll have the shop do that as well. What about valve seats or guides or whatever the rockers hit against at full lift? Anything special I should know about doing this?