Std Gauge and O same Layout

I have a 5x 15 right now im working on.  elevated mth tressle onto a elevated section on half of the layout kind of carved out.  Both upper and lower will be City oriented with trolleys running around, speeders.  etc.   I did not use my software because I did not know what I wanted and I like to play around with actual track too. 

Chris

Sean,

We have a 13 X 20 layout with an outer loop plus one spur of Std Gauge with O gauge on the inside - all on same level however.  Allows us to run Std Gauge without interfering with the O gauge which is much more extensive.  Smaller size layout should get same results.  If you have any kind of spurs or sidings on the Std Gauge loop I would very much recommend Ross Std Gauge switches - I have one and it is smooth as glass.

Mike