is it muscle soreness or joint pain that you're dealing with in these joints? You said soreness, but I think you might mean something else, so I just want to clarify.
As has already been mentioned, deca needs to be run longer than that to be effective. Your dose is fine, but 8-12 weeks is better. I wouldn't run less than 10, personally. If you have access to NPP, that would be useful to start getting the benefit quicker.
That's a relatively strong cycle overall, but it's not insane, assuming you've run something close to this in the past. I think it's weird that you started with 400 test and some shitty sarms, then 10 days later you're planning on running 1500mg of total gear with tren and deca added in, lol.
I don't think your tren is 'crazy high', assuming you've run it before. And I know people who run high test/low tren, high tren/low test, and anything in between. It's about personal preference.