Mild 318 engine build advice

You would only have to install regular flat tappet hydraulic lifters and non-roller pushrods.

I would question putting 65 heads on a late LA engine. If your core engine is a late 80's pre-magnum 318 it already has the best production 318 heads (302 casting), the 65 heads are probably closer to the worst especially with their oddball bolt angles. I understand you have an intake already, but consider trading it for a similar unit with the common LA bolt pattern.