Ken - no, don't worry, I had no intention shelling out for ACP when I have SGP 
ACP itself does not do the multiple target planning. It uses an independent utility, ACP Planner, which is free and downloadable from. http://acp.dc3.com/planner.html
It works harmoniously with Starry Night and TSX and exports a file. An ACP plan is just a list of targets with image/filter specs and optional timing info. No different to the others really.
All this year SGP has effortlessly provided nearly all my automation needs and wholly remotely too via Microsoft Remote Desktop. The only things I have to do manually at present are for start up: checking the weather before starting a sequence (rather than have SGP monitor the weather and decide for itself whether to kick things off) and setting the start and end times for a target - working out the times over which its altitude is over my imaging horizon of 35 deg.
It occurred to me that approximate imaging times might be loaded at the time of importing the target information into a sequence, as default values, which can then always be overridden. It is not perfect - as each night it will be slightly delayed, but then SGP handles lost guide stars etc very well and it would shut down a little earlier each night anyway.
Anyway - it was just thought. clear skies