Need help, advice with my 318 build

So I'm trying find that sweet spot just in between stock and ported.
With mild port work, you aren't in any serious danger of doing too much. As I have been taught (and again, I am not an expert on this), concentrate on the bowl below the valve, and any other area that are rough and that narrow up. Get a good multi-angle valve job with a steep angle cut below the valve area.

Windage tray is something that might be thinking of also to make it more efficient?
Windage trays give most of their benefit at higher RPM's.

Have some more grind questions about the combustion chamber. You don't want to have any sharp edges in the combustion chamber as those gets hotter? Is it alright to just smooth this edges? Going to buy a plexi glass and CC my heads soon and then I will find out where I'm going to be more exact where my compression will be. So if the chambers are to small the smoothing of the edges will lower my compression. Not going to touch the quench area I rather take material in the chamber. My second question about the chambers is it ok to grind it a little further than smoothing the edges and shape the non quench are to the cylinder shape or does that edge doesn't effect the combustion process?
I would smooth the outer edges and then smooth the combustion chambers all over with a rough grit sanding drum if I was doing anything to them beside removing material for the compression ratio. And be aware that most of the time, the chambers are larger than published. I would not bother with matching the size of the combustion chamber to the cylinder.