I'm thinking about incorporating av K&K audio output stage in my diy NOH myself these days. That's definitely a nice option. I'd need to get a bigger box and do some minor rewiring, but there won't be any major hassles, AFAIK.
Their full preamp kit consists of input stage + attenuator + output stage, but when using tx102s you'll only need the output stage. Raleigh audio, who designed this line stage, specifically recommend the Bent TX102s for this scheme, so it's a safe choice.
This doesn't include a phono stage, however I thought it might be an interesting idea for owners of the NOH.