1) yes, it is possible. SSD protocol will help but you have to make sure that the loops are only connected to the main track from one side.
2) I do not see why not...but if you are new to routing I would take one step at the time. Doing what you plan there requires cutting flippers and merging the slots...which can be fiddly.
3) I think you can do it with ARC pro as your S/F line. You would need to embed the track piece of the power base to the routed track
4) Not sure. I think some people here with more routing experience can help.
2) I do not see why not...but if you are new to routing I would take one step at the time. Doing what you plan there requires cutting flippers and merging the slots...which can be fiddly.
3) I think you can do it with ARC pro as your S/F line. You would need to embed the track piece of the power base to the routed track
4) Not sure. I think some people here with more routing experience can help.