I usually use my Push to control the scenes and clips, also to control some devices (which I rack and Map Macro - auto map with Push).
I still have my APC 40 but I wonder if I will sell it or not, because I don't use it mush anymore. But the APC 40 is wonderful to control the sends and the devices parameters, I really love the knobs and in a live set it is really nice to play with both Push and Apc.
I control my synths (Prophet 12 and Pulse 2) with Ableton for the launching of sequences, but I tweak the parameters of the synths directly on them which is more fun ^^
I also use a Korg Kaos pad Quad for the send A effects, which is also quite fun and convenient. It permits some nice transitions and give a more live aspect to the set.
I generally write everything in a single session (duplicated in many other sessions for work and tweaking), I write midi clips for the drum racks and my synths and I use many samples (freezed and flatten). I generally have 8 tracks (one or two drums, 2 synths, 4 samples).
I like to play like it, fell free to give a try
And good luck.