Final configuration...
View attachment 419535
I chucked out the Specialised Aerofly knock offs for some 3T Ergonova knock offs. I just found the flared bars did nothing for better control on the trails

I found these normal road bars more comfortable.
With no suspension any bumpy trails means slow speeds to avoid being bucked around or off! My conclusion is that if I'm going to ride trails I'll be doing it on a mountain bike. Currently this has 2 sets of wheels, pictured are 50x29mm with 32mm Goodyear Eagle F1s which I use on road and smooth hard pack. The other wheels are more gravel oriented 38x28mm with 40mm Tufo Speederos.
It's surprising how much extra stability the width adds to the wheels in cross winds. I have a set of 38x22mm on my road bike and they are a bit scary in strong cross winds.
I also swapped the USE suspension post for a Specialized Pave seat post which I've used on many of my bikes over the years to absorb some road buzz. The suspension post was just too bouncy at high speeds and just made everything feel unstable. This bike is nearly as fast as my road bike now and nearly as light. It's great for picking up and running or riding through parks and over overhead bridges, and other little connecting paths.