I have read Dostoyevsky's four great novels twice ....
and I commend your undertaking; but I would stick to these: The Brothers Karamazov, The Possessed, Crime and Punishment, and The Idiot. I have read others such as The Gambler, A Raw Youth, House of the Dead, and The Eternal Husband. I read the Constance Garnnet translations, revised by Avrahm Yarmolinsky. What I found to be interesting and amusing was to listen to an audio cd while reading the books. Most of the audio books use the Garnnet translations so unabrdged audio books are easily found.