Nice paint job! This bird will look nice at the end.
Regarding rigging:
I have used EZ-line on my finished SE.5a and will use it again on the next one, because it is more flat (oval) and so a good representation on the flat RAF wires of the original aircraft.
On the finished one I used the Eduard "Stretchers", as they call it on the PE, but the next one will get the new and easy RAF wire terminals from Gaspatch. They were not yet available during the first build. I used them on my Dolphin and they provide the best representation of RAF wires in this scale.
At least don't use turnbuckles!
Cheers,
Frank