Couple of things, based solely on my early experiences with those particular recipes, versus what I learned on this forum
:
First, yes, use the calcium chloride if you're using P/H milk. It will definitely give you better curd to work with.
Second, how much milk did you use and how much culture? And which culture? If it was the C101 packets to 2 gallons of milk, use half a packet next time and see how that comes out. Most of the recipes in that book use at least twice as much culture as is necessary. The packets are roughly 1/2 tsp, so use 1/4 tsp or even less the next time.
Third, I've had some pretty good luck getting washed curd cheeses to be MUCH creamier by basically over-washing them. I remove more whey than called for, and add in more water than called for. Stirring times, etc. stay the same. I forget the exact reason I started doing this, it was an idea I got from something Linuxboy said once - possibly having to do with it removing more calcium hence creamier? Not sure, but it definitely works.
(Yes, I know that was more than a couple, but hey, it's early still!)