I also tried multiple angles for a project. Although it worked very well in the end the problem is the total bitrate of the muxed stream can not be higher than normal maximum bitrate so if you have 2 angles the video bitrate for each angle is cut in half. Not to mention 3 or 4 angles... And ofcourse it only works for 2 different versions of the same scene that have the same number of frames. So you can't solve the problem of inserting deleted scenes with multiple angles.

I think you should start with something simple like ROTS. I only know how to do it without subtitles.

1) Rip the movie to your hdd and demux it using vobedit. You just need the .m2v and .ac3 (5.1) files.
2) Rip the deleted scenes to your hdd as seperate vobs and demux them with vobedit. You just need the .m2v and .ac3 (5.1) files.
3) Use cuttermaran to cut the .m2v and .ac3 movie streams at the places where you want to insert the deleted scenes.
4) Use cuttermaran to paste all the seperate .m2v and .ac3 movie and deleted scene files in the correct order. You now have one big .m2v and .ac3 file of the entire movie including the deleted scenes.
5) Open the .m2v and .ac3 in dvd-lab pro. Now you have to frame-index the .m2v file and set the chapter points. You MUST set a chapter point at the first frame of every deleted scene and at the first frame of the scenes following every deleted scene. And set chapter points at every other scene you like.
6) In dvd-lab pro you can make a playlist. You should make one playlist that includes every scene and one playlist that includes every scene except the deleted scenes. That way you can make 2 menu buttons, one to play the movie with and one to play the movie without deleted scenes.
7) After authoring you have to open the .ifo file with dvdremake and mark every chapterpoint as seamless otherwise there can be a slight pause when a deleted scene has to be skipped.
That's it!