You should have a 2x1.5x1.5x1.5 fixture cross there, not a 1.5" sancross.
Snaking that will be hard. They tend to skip over into the other arm.
The two 90 els above the cross should have been at 42", or if not that, at least two 45's which is considered a vertical installation.
When I have 1.5 coming from below, I do something like this.
When I have 1-1/2" pipe, I do something like this.
And this if I have 2" on the lower side.