Ronseal satin yacht varnish … can use as a wipe on if mixed with white spirit . For first coat something like 30 : 70 ratio so it soaks right in . A few 50 : 50 thereafter and you can get very nice results for exterior work.
Since you have the Triton thicknesser then the Metabo could be used in jointer only mode ... as I do. The Metabo is a very good jointed in my opinion . It’s reasonably quiet too .