HI Scorpio Moon -
1) I agree with the recommendation for Total Body Tri-sets.
2) Another good set to try, even though it's older is Pyramid Upper Body and Pyramid Lower Body. They're both solid and easy to tweak so that you can shorten them or make them longer.
Personally, as an intro to Cathe, I'd recommend sticking to her strength workouts that are 2-day splits rather than the 3- and 4-day splits that others have mentioned (Gym Styles, Pure Strength). Those tend to have more sets and reps. You're already working super hard with just your body weight and I would want to be cautious about adding too many more reps just yet.
Happy training! I think you'll like Cathe. And don't feel any guilt about modifying -- I'm a fairly experienced and advanced exerciser and I modify like a wild woman!