[CA] DSM300 B164 vs Axiom & B60

[Firewood]

Just want to clarify a few things. I currently have a GS165 with a DSM300 and P66 and an Axiom 9" with RV-100
raymarine 48" HD color radar
Evolution EV-200 autoilot
RMK-9 Remote
32' sportfisher with twin outboards

I plan to upgrade to Lighthouse 3 and combine the two MFD's. I have learned that the RV100's purpose is for trolling and drifting. So the plan is to keep the RV-100, get rid of the P66 in favor of a B60 or B164.

Option 1: The 1000watt B164 could be driven by the DSM300, but I read about endless problems in the past getting those two components to work together. Have these compatibility issues been resolved?

Option 2: Let the Axiom drive the 600watt P60 and eliminate the DSM300.

Main objective is to maintain bottom lock running at 30-35mph, being able to pick up bait [censored], fish etc as we are running offshore. once we are fishing I will rely on the Axiom chirp, down vision and side vision split up on the two MFD's

I'd also like to add a high accuracy temp sensor, like the B17. Any other recommendations for a high accuracy temp sensor?

Kind regards -