I think you have gone a bit overboard with hones, if you have been honing for a month or so. You already have a full progression of nanis to 12k, and you will have 4 finishers. In my opinion it takes more than one month of honing to get down the basics well, so that you can try a finisher after the 8k. If I would be in your place, I wouldn't use anyting than the nanis for a few months.
In the lapping section, I would go with the interupted surface 325 DMT, or a 400 grit Atoma.