Walter...sounds like you have a nice future arranged...retirement? We stsrted raising table beef for our family and friends and the demand grew faster than we could finish steers...I would figure out what you are going to do with the cattle once they grow up...a 1200# steer will fill a freezer and unless you eat alot of beef you will find yourself giving it away, or in our case with a large extended family, having alot of Sunday cook outs.
Temperment isn't so much a matter of gender as it is breed and how the animal is raised. Can't go wrong with Herefords, I haven't met a nasty one yet. We raise them along with Angus and Baldies and have introduced a Limousin heifer this year, covered her with our Red Angus bull.
I would advise to get set up with good equipment and facilities, educate yourself about cattle, learn the market and make some friends in the business(most important) before you go out and buy cattle...just my opinion. Sorry I tend to get chatty. Good Luck, Susie
