Just export project translations to SIB/SIL file using TsiLang Expert. Then use SIL Editor to change languages order and save file. Load it back into project and adjust settings in dispatcher component (will need just to shift English language name).
Hope this helps.
Small note: use TsiLangRT only if you need to provide run-time translations editing on "per form" basis using built-in Translation Editor. Otherwise it is not needed.