Hi, i have one but am no expert at jet flying, having only buddy box experience.

Im told they actually fly nicer on a wren44 than a 54, something to do with the lower wing loading.
i put jr 8411s on the elevons, 9kg pull, far more than yellow recommend, i think youd be struggling to split the elevons into two, theyre quite small.
I do have video but the file is far too large to post here, ill try to cut it down and could email it to you.