Hah! I think that's probably my thread you're referring to! Now that I've got it all sorted out, I can pass on some of what I learned from it.
First off, with the Lucas, I poured half the 10W into the engine, and then added the Lucas right to the jug. Swirled it around, and then poured some through the pushrod holes to make sure they hit the lifters and cam.
If you already added your zinc to the engine, then you're probably fine, just make sure to check that the oil level is right AFTER you've primed the engine. Like Joe said, prime it with a high RPM drill until oil comes out of the rockers.
An inline filter shouldn't be a problem, as that's basically what was stock on the 235 back when zinc was naturally in the oil and it didn't do anything to filter it out as far as I know.
The mistake that I made was turning the engine over too many times and then not initially running it for the entire 20-30 minutes since I didn't have it fully hooked up. As they mentioned in my thread, the camshaft relies on the high RPM to sling oil on it for the initial period, so as long as you keep turnovers to a minimum and do the 20-30 minute stress test at 2500-3000 RPM with no idling, then you'll be on golden pond.
Good luck man! If this is your first time rebuilding an engine, then I can imagine what you're feeling. That first start was a doozy of a feeling.
