Based on the figures in your post - no.

2 RTs gives 7500 miles @ 160 euros. Can purchase 7800 @ 155 euros (more for less). And status miles dont matter to you (already have enough for SEN). The only way I could see maybe being worthwhile is if you are close to the new top tier threshold (whatever that is), assuming of course the extra benefits (whatever they are) are worthwhile.