Just did a lot of engine work, before I start the vehicle I have few questions

I have installed new Mopar filter and fresh oil, as well as coolant. I wiped down both heads, and thoroughly cleaned every part that was out of the engine. But I worry about dirt or dust may have gotten in places I can't see. Does it make sense to run engine for full warm up cycle, check for leaks, drive 20 miles, then drain oil and change filter or drive 500 breaking miles then change oil and filter. Engine had head work, timing cover off, etc. So want to be sure I use the best possible process. I did have oil pan off and cleaned everything in that area as well. Any other advice on initial start up? I am a SW guy trying to fix wife's van. So need help to insure I don't do something stupid. Thanks