Combining top-end work with volume I imagine being fairly difficult, I'm liking where you're coming from with the combination of HAF (heavy as ****) singles equipped along with reps with a lower percentage, although, at least from my experience, I'd be tempted to up the percentage or make sure you do a whole bunch of sets (like the 10 you said) - depending on how you feel, etc.
If you want it to be a volume day then you need some real brutal numbers, at least from what my experience with Smolov told me. Like I said, be that either from 7-10 or so sets of 5, or 75-85% depending on how insane you're feeling. For example, if I did 5s using 85% of my 1RM (240) then that's only 205kg, which I know I could do with ease - I've done 215kg for example.
If you want to do this day using something slightly Smolov-esque than it has to be brutal, insane, and make you collapse to the floor in exhaustion and excitement at finishing when you're done - as it did often for me!
I'm not really the guy to ask when it comes to progression or cycling or whatnot, I suck at that stuff, I just know how to lift heavy shit basically and the ins and outs of specific training styles and ideals. Which is essentially why I want to do C&P.
Going to start tomorrow trying some singles with 230kg on both squat and deadlift. BIG.