Help porposing

[Oldboat]

So got out to try my 23 with 300 Suzuki 30 inch shaft and I’m experiencing porposing. Setup is a3x16x20 prop and it seems to need more torque to get on plane .When I measure keel to AV looks like 4 inches . I feel like I need to raise motor 2 holes and change prop to 18.5. And add weight forward . Raising engine 2 holes going to put it about 5 1/2 inch spread AV to keel. Any help would be great