Tom,
Wooly buggers or leeches in brown, black or olive always produce trout.
Size 8 is a good starting point.

Chironomids make up about half of a trouts diet in the spring, so getting that that dialed in will help.
You can for sure catch fish on chironomids on a sinking line. The takes are pretty awesome.
I prefer to fish them on a floater with a slip indicator. For extra deep water you can skip the indicator.
Early in the season, the chironomids tend to be larger, so size 12 and 14's are a good starting point.
You can keep your your patterns pretty simple. A brown, black, olive, red or tan thread body with silver, copper, red, green or black wire ribbing, a white bead and a peacock or ice dub thorax.
The color combinations are pretty endless. Adding a red thread butt to your patterns helps as well. Coat it with Sally Hansen's Hard as Nails to give it a good glossy finish.
A tungsten bead or stuffing the bead with lead wire will help the sink rate.
The "chromie" and "snowcone" patterns are both excellent patterns as is the San Juam Worm for imitating blood worms.

Good to see you putting the 5 wt to work. I hope this helps. Good luck with the hip and I'll see you on the beach this summer.