Seems like a good stack to me. The amounts just come down to how you respond to different compounds and how much you aromatize. For myself I would probably do 300/200/500. Total mg needs is more individual though.
For cruising, I subscribe to the idea that 1-3mg/kg is where it should probably be. 1mg is true TRT (100mg test/wk for a 220lb guy), while 3mg is on the overdriven end where you can run it forever but also expect some health consequences longterm. Ie, 300mg test is usually going to require an AI, or you are using test & mast/primo, and both of those will impact lipids over time. And 200/100 test/deca could have more longterm neurological impact.
2mg/kg (180mg for a 198lb man, 220mg for a 242lb man, etc) is generally excellent to maintain quite a bit of muscle and performance.
There are people that cruise on 4-500mg (or more), but they either need to take a ton on blasts or aren’t trying to get a lot out of blasts (1g won’t do much when you never come off 500).