I used my NEW Toro Z453 ZTR for the first time yesterday. Boy what an experience that was especially since Ive been using a ride on JD lawn tractor for 9 years. I started cutting at the perimiter first, but I am used to starting the 1st pass by going down the middle of the yard as a center point first then cut my way toward one side heading toward the perimiter. Once finished with that 1/2 I'll go back to the center line & cut towards the other 1/2 of the yard to finish. Whats the best way typically to start cutting once the perimiter has been done. I have mulch beds to go around & lots a curves due to tree beds. 2 acres total lawn front & back. Tips are appreciated.