I am finishing up a coupla weeks or 3 of a repair job including new oil cooler, lines, remote filter, rear seal, clutch etc. I'll fill the filters full of oil on install but the cooler & lines are going to be dry plus engine and turbo have probably drained oil too.

So I want to pump oil around a little first before cranking. I don't have any special oil pump drive tool and want to just unplug my remote mounted FSD and spin her over rest starter and repeat a couple of times before cranking.

Is this a good idea, not required, or is there another good trick?

I welded an old, worn 1/2", 3/8 drive socket to the shaft of an old 6.2 vacuum pump. Took off the vacuum diaphram canister pump, popped out the soft plug on the top and ground the teeth off the driven gear. This allows me to prime my rebuilt engines with a speed handle or, if I'm tired, an electric drill. I do this upon assembly before I put the vacuum pump in. The same would work in place of the oil pump drive unit on the belt driven vacuum pump type engines.

It's the same trick I use on gas engines. "Tools" are fabricated from old distributors. I have several different models. They work better than trying to feed a socket/extension down into the hold and onto the oil pump drive shaft. Keeps from dropping stuff down into the engine.