4m next Es season?

Before the next Es season, I hope to convert my FT817ND so that 5V TX appears at the antenna socket and erect a 4m halo under the V2000 vertical omni antenna. 

I know 4m is unlikely to be "open" as much as 10m, 8m or 6m, but there should be several Es openings into Europe. Using my transverter, this should allow me some 4m Es QSOs, especially with FT8.

See https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/homebrew/4m-transverter .