(no medical training here either, just what I've learned and researched thanks to surviving two heart attacks)

That would sound like a weird configuration, but "technically good enough" as long as the chambers contract in the right order relative to each other. I'm guessing you could develop conduction problems with age, which could have a problem repairing "the normal way", and the "smart" EKGs that automatically spit out an analysis, will always show a warning when they don't see the normal order of electrical activity.

If you are at risk of hearth problems, I strongly suggest getting familiar with he early warning symptoms. We don't normally feel the heart itself, it has no nerve terminations intended for that, so the warning signs feel like maybe a stomach ache, or pain in your arm, or neck, or some burning, or similar. "Heart adjacent", not directly where you'd think the heart is, and it changes from person to person.

I wish you never have any problem, but if you do, don't try to "wait it out"; once you know something weird can happen, get at least a blood pressure meter and an oxymeter (even cheap non-certified ones are better than nothing), and learn what your "normal" vitals look like. Then stay moderately vigilant for any changes, rush to the ER when they go out of "normal".