The best option is already in my linked answers (Reading Qu'ran even we do not understand Arabic during Ramadan? and Reading the Quran in Ramadan) reading qur'an while trying to understand it.
There's no need to finish or complete a recitation, as there is no clear backup for that in the sunnah. It is something people made a sunnah lately, as almost all mosques try to complete the qur'an in taraweeh etc. But Allah says:
Then do they not reflect upon the Qur'an? If it had been from [any] other than Allah , they would have found within it much contradiction. (4:82)
and in surat Muhammad():
Then do they not reflect upon the Qur'an, or are there locks upon [their] hearts? (47:24)
so reflection and therefore understanding the qur'an is asked, recommended and needed while reading it.
On the other hand it is not recommended to read it with haste or struggle ...
Move not your tongue with it, [O Muhammad], to hasten with recitation of the Qur'an. (16)
Indeed, upon Us is its collection [in your heart] and [to make possible] its recitation.
But you should read or at least try your best to read and recite it, as it was revealed ...
Or add to it, and recite the Qur'an with measured recitation. (73:4)
in a measured recitation (with tajweed or with no haste and by giving each letter the most corerct intonation etc.).
So the best is to read the qur'an and try to understand it without haste nor struggle, but try to take your time in the pronunciation and try to understand, reflect and think about what you are actually reciting.