Thank you Francisco.
I've got a i7 4790k with 16gig ram, so the PC's not the issue. I did use brute force as the secondary with a few setting that were needed to remove noise from reflective surfaces, so that would account for the huge time.
You completely right on that my combinations never hit the right spot as the settings you're giving now is not one of the many I've tried.
Will go give this a try this evening and from what I can see those setting will give me a very quick render, will just need to see if my fine details survive.
Will give the Brute force + LC a try as well. Never tried brute force as primary before, so very curious to see how that works.
Will post an update as soon as I know the results. Can't post the image, but if any issues I'll post a cutout again.
Thanks again Francisco, really appreciate the help and insight you just gave me.