A tip to managing the increased number of frequencies, especially out of a busy class C.
Develop a cheat sheet
As you fly in different directions, write down the frequencies you're given (a good practice anyhow). Over a period of time, you'll notice the sequence of freq changes you're given are the same along that particular path of travel. And once you know the pattern, you can make your own reference card that shows the freq sequence you can expect for that route.
When I went to Dalhart from KDTO this Sunday, I started with "Regional Approach", Then FTW Center, then Shephard Approach, then a different Sector of FTW Center, then ABQ Center, then Amarillo Approach, and finished with ABC Center again. Each time, I wrote down the frequency as I was given it.
On the way back, it was, surprise, the same sequence and frequencies, but in reverse.
So now I have for my kneeboard the freq's I can expect whenever I travel in that general direction.