Intro to Class V
Having it all come together is the best advice ever, as is practicing advanced skills on easier runs.
The other day, I went for a hike with my mother whom goes quite slow while I generally power ahead with strength and endurance.
Second nature practically I picked up on only stepping on the tops of rocks on the trail. Figured it would be a great way to get a good sense of balance & fit, acquainting with the dimensions of my new Scarpa boots. Upping your skill level is a lot like this on easier runs... gradually, you become highly familiar, focused & comfortable on these runs. This progression leads to improved comfort and clarity, putting into proportion all the skills required & features of a rapid. Through beyond this improvement, you'll realize practically second nature the tremendous opportunity for growth and learning simply by picking up on what else is there. This not only ups your skills but is a challenge while fine-tuning river-reading ability. Your desire to push yourself may also help to tone down the skills & on-river awareness. Continued experience improving through a natural progression taking on advanced moves up into Class IV really may be the best advice for your paddling.
I second all the recommended runs. Upper East, Clear Creek of the Ark, Bailey, Gore, & Castle Creek/Slaughter House, are good ways to go while continued practice will help you in taking on what upcoming rapids will present.