No, you cannot make this layout without the easement. It was designed that way and all of the other pieces fit with it. Trying to fit a three switch wye in a standard oval will be an adventure.
It makes the train look better on a small layout and track better. It keeps the couplers closer to the centerline.
Anyway, here it is in SCARM with some 3D's. You'll have to play with the clearance for the final height for your equipment. You'll have to cut some fitters and wiggle fit some places. The Atlas O flex on the parts list is only there to create custom fit pieces. The pieces on the reverse loop connecting the divergence are only there for the 3D effect. One 8.25" piece will work, so add a 10" straight for that and the other one up in the wye.
