the point is dc pumps like any other range in flow/wattage etc etc . I would get you head heights and such like you did and flow needed and go from there. if you get onethat is lot more powerful then it can be dialed down which is nice. the thing is I think you will be dropping 300-400 for a pump like that

Yes nothing in this hobby comes at an affordable price tag. I’m
Ok with that as long as it’s built good.

Update on the sump and display
 

I went with a dc pump as suggested it was costly but well
Worth the money. Still lots to do but the tank is moved and operational...