Based on the information you provided here’s what I’d recommend. 1) The Tidal isn’t an exceptionally fast rod so as a 7wt, a 200 grain tip would be in its wheel house. 2) Two lines come to mind that would meet your requirements—trout-big-med rivers, streamers down deep. SA SONAR Trout Express 210 grain (about a 20’ tip). SA SONAR 30 Cold 200 grain (a 30’ tip). The 30 Cold is a really functional line for getting large, unweighted streamers down quickly. Additionally, the 30 Cold once you learn to handle it shoots very well with distance and accuracy. I’ve got at least 8 of the 25/30 warm/colds in 150-300 grain models for use here in MT and FL.
I recently had to shelve my T&T No Sanctuary II 5 wt for some repairs and took out a Scott Radian 9’6” 6wt on the river the other day using the same line as the 5 wt—A SA Sonar 30 Cold 200 grain. Paired up nicely.