Sow successionally and pick your varieties with care.
I like Twinkle, Celebration and Early Onward for first crops, then Onward, Jaguar and Hurst Greenshaft, which all seem to crop quickly.
Seems to me that if you've got a nice rich bed to use, you could keep sowing and picking throughout the season. Sometimes start mine off by putting them in a seed tray (the entire packet, will nilly) covering with moist compost, waiting for them to start sprouting, (have a poke around and look, they don't take more than a week) then planting them as soon as they've germinated, I don't wait for them to produce leaves etc, I just scatter the germinated seeds in the drill.