I run my tank 52 to 85+ or so, for high outdoor pressure and have a pressure regulator, about 65 bucks at the house inlet. I set that at about 50 psi and never notice any pressure changes in the house. You could set 60 to 90 and try 65 at the inlet to the house.
Valveman will fill you in on a CSV that will do about the same except with the BIG tank, you might get a lot of extra pump run time.
You don't want your pump to cycle much and both of our methods will reduce cycling the pump during water use in your house. The CSV will be superior when you irrigate.
Better look hard at your pump size and output. Sounds like you have a motel and 3/4 hp might not keep up with use with either of my proposals. A high pressure pump "5 or 10 gpm" so called will not give the volume, and a high output "20 or 25" gpm so called might not give the pressure you seek. You can only have it both ways with a pump DESIGNED for your pattern of use and well depth and output.