I just couldn't wait to see if I wanted the new H-type so I found what I wanted with Channell Wasson and placed the order. Mostly because he had the bike ready to go. Other shops either didn't have the color, gearing (or had a delay in converting the stock 6), etc.
Basic black ML6 with the reduced gearing and stock Brompton Kevlar tires. I'd thought seriously about the Marathons but as this will be primarily used on paved bike paths I think the stock tires are a bit more free-running and should be sturdy enough. I can't remember the last time I got a flat.
I also got the extended seat post and firm suspension block but no luggage items. I usually carry a small Mountainsmith lumbar pack for water and misc. I'll have to see about maybe the front luggage options down the road. Also, will try the stock saddle for a while but may switch to a Brooks B-17 down the road. I've got one on my MTB so I can try it and see.
Appreciate all the advice I've gotten here and wading through the many Brompton threads. I've learned just enough to be dangerous...