Over budget 318 build

Concerning the cam..
Are you considering solid lifters with adjustable rockers or Just a Factory setup?
I don’t know what the top end is going to look like yet. I have those aluminum heads which will need oil through pushrods from what I’ve read. I don’t know what length they will be either. What is better? That’s something I still have yet to understand fully. Like I said it’s my first build but that’s later on in the build. Will it affect anything on the lower end?