My intention was to have fun experimenting with different tunings, and I still intend to do that. Another guitar distracted me (see the Ambridge cypress thread) and I haven't touched it since shortly after making that video of Scottish lute music. But I will definitely get back into it soon.
One of the tunings I will attempt will be dm tuning, but down a semitone - c#m tuning. From treble to bass this will be e, c#, g#, e, c#, g#, d#, b. That looks a bit of a nightmare, but it's just fdafdaec down a semitone. I'm hoping that will allow me to read baroque lute tab, and make adjustments for the bass notes. Hopefully most of them will be available to finger with my left hand, but I expect some will have to go up an octave. I'm looking forward to hearing the sound of the open-string chord.
I used to play some Weiss on both an 11-course and a 13-course lute, and it is a lot easier for the left hand than playing guitar transcriptions in regular guitar tuning. Weiss used the tuning really efficiently and effectively, so I hope to get some of that on the guitar.
Where will I get strings for this tuning? Well, someone once kindly sent me a set of Hannabach strings for alto guitar pitched at f# on the first string. So, I'm taking some of those strings, and some from a regular set. Well, it should work. I'll let you know.
One of the reasons I want to try and preserve baroque lute tuning, is that I have a big pile of baroque lute tab. You don't say if you can read tab or not, but I encourage you to try, as there is a good-sized mountain of the stuff, much of it legally free online.
I also want to try theorbo tuning. I have a feeling Robert de Visee's theorbo music might turn out quite nicely in eight strings. That remains to be seen.
If your intention is to keep regular guitar tuning plus two bass notes, I think you will have a hard time playing Weiss with any baroque flavour. So I recommend getting the guitar before they discontinue it, buy the strings you need, and learn to read French tablature - it's easy to do so, you could do it in half an hour - then there is a huge repertoire for you to call on.
I'll try to get back to it this week.