I more or less agree with you.
English has become for sure the most actual vehicular language, all over the world,
in terms of USA position and immigration, Spanish has become an important language for your nation, but I would just make a remark that it would be the duty of immigrants to learn English rather than to americans to learn Spanish to be able to communicate with illegal immigrants (that's a paradox due to weak US regulations and laws),
Chinese is the most spoken language in this world, Chinese are all over the place, controlling actually huge businesses and it's going to grow fast. Chinese is the major future asset if we don't want to be swallowed just because we can't catch their language.
French is quite interesting because spoken in France, a part of Belgium, Switzerland, Canada and a major part of Africa, it is also the official language of the Olympic Organization and widely used in the UN and EU Organizations,
Arabic is wide spread and official language of all the Muslim World, so it's surely all important if we want to understand their more and more deadly demands,
Rather than Indonesian (a mix of Dutch and Malay),all limited to Indonesia, despite their huge population,, I would not consider it,
I would replace by any of the Indian languages as Hindi. India is the most populated country of the world after China, and migration has reached all over the place, It will also become soon a major economical partner and competitor,
Japanese is acceptable as far as that country has reached a huge economical ascent on the Oriental and Occidental regions as well,
I would then put Portuguese, because of the existence of Brazil becoming an ineluctable economic partner in this world,
Russian is also a must considering the fact that political balance with America and Europe, becomes more and more important, and also thinking that Russian is still, if not spoken, but very well understood in many easter region of Europe, and in Asian former USSR states,
I wouldn't even think about Iranian (Farsi) because it is strictly limited to around 70 Million people of that country only, without any aura on the other world anymore (I mean the Syrian & Old Assyrian Antiquity),
So only one place remains, that I would give or to German viewed from Europe's side or to Italian, viewed from US important historical immigration, you'll choose!
Hope you'll find it pleasing?