To be able to utilize the water all the way down to 400’, you are going to need about a 10 GPM, 1.5 horsepower pump. Since you are only this water in the house, a CSV won’t eliminate many cycles. However, because it is such a deep well with a high water level, that pump will see too much up-thrust until the well pulls down a ways. The CSV1W will add enough back pressure to keep the up-thrust from being a problem. To do this the CSV will also hold back 233 PSI on the pipe before the CSV. So you need to make sure the pipe is rated for that much. Then you can use the CSV1W with as little as a 4.4 gallon size bladder tank.
Without a CSV you need at least a 50 gallon size tank, and about a 10 GPM Dole valve to limit the up-thrust. The CSV works like a variable Dole valve. It won’t limit you to 10 GPM if you need more than that.
I would stay with a brand name pump with a Franklin motor. The Franklin motors at the big box stores have plastic end bells. So you need to find somewhere to get a regular Franklin motor. Lancaster has been mentioned and I also like Flint & Walling, and AY McDonald.