The premise for my original question was predicated on a preliminary Lionel AF FasTrack layout plan drawn with SCARM software [attached]. It utilizes both turnout types [R20 and R27] currently offered by Lionel. The encircled "yard" area would look more realistic [and probably accommodate an additional track on the right side] if even the lowest-numbered turnout [#5] shown in your third photo could be substituted for the R27s I'm limited to [with FasTrack].
What brand of trackage did you use for your layout? Is the company still in business?