Hi John,
Glad you like the BPL gear and you might be interested to know that the design for them came from doing the TGOC a few years back. At the time I did it with a home made version of some 10 x 8 in size, but found it was too much material for my needs, hence the question about weight.
I did it with the SZ at the same time and found the combination worked well. The midge issues I reported on in the podcasts you mention were only minor and came as a bit of daytime surprise, probably due to the mild spring at the time. They were about at the time we stopped for a brew, but we didn't see any during camp, thankfully.
The only thing slightly against the tarp issue is privacy if you are on a campsite not used to such simplistic approaches. Although having said that, the US guy we met was using a spinnaker tarp in A Frame on the campsite in Stonehaven and Montrose, without any security or privacy issues.
The new DD Hammock / Tarp nest might be of interest to you, if bugs are about. Certainly the Golite Shangri-La 3 (New Hex 3) works well as a single skin shelter, giving fantastic protection, space and privacy for the weight.
Rose and I have applied for the next event, and are currently juggling with options as there is two of us. If I was doing it on my own I would probably use the Solo Tarp / SZ combination, or even the Mirco Tarp. However as it is such a great social event, the SL3 or Black Diamond Megalight, make for the long comfortable conversations on wet nights.