More Small Block Questions

When mounting pistons (flat tops) is it worth putting them on "backwards," so to speak, like you hear about the bigblocks?

I have fed mog/sterling 285NP's and they have the notch in the piston that lets you know which way to put the piston in.

Also, I have a hydraulic cam. What pushrods do I need to run 273 adjustable rockers with it?

Okay, one more. The deck height on a factory 318 is supposed to be 9.6".
How can I get the piston to deck height without assembling the rotating assembly? Stroke is 3.31", Rod is 6.123", and piston comp height is 1.72".

Any help is very appreciated!!