As a fast-reading JoJofag, I have a few recommendations for OP.
-Do it 1-2-3, 4-5-halfof6-partof7.
-Get a playlist of some appropriate music together. Get Back (by The Beatles) and any Led Zeppelin are mostly required, but really nearly anything classic rock-ish is OK. If you can, listen to the music the artist references while you're reading the appropriate part of the manga.
-Don't rush. Go a bit slower than normal so you can appreciate the whacked out artwork. Yes you CAN power through it, but you'll miss a ton.