No load wall gif looks pretty good.
There should be a wye fitting going up to the lav, not a san tee. The right fitting would be a combo or a wye with a 45 to make it a tye-wye.
The line for the tub and lav would be a 2" line.
Going up to the lav, it could be reduced to 1.5"
And the tub can use a 1.5" trap.