Yeah, be much nicer with a 3 bladed prop.
Be even better with 2 IO-550's in it!
The 58's I used to fly normally TAS'd anywhere between 180-190kts at 8-10,000ft. I took off one day in an empty B58, reasonably cool day, held take off power (after all, it is max continuous,
), normal 500ft turn after take off and by the time I was abeam the aerodrome again intercepting my outbound track I was at about 4,000ft AGL,
.