Nice looking plot. Wow 2 gardens!
Heck i'd just make two small ones and have fresh all year long. Or maybe not. Couple days ago, slush/snow 32F, yesterday was nice 50s in the sun, last night 28F. Still too early and too wet. Kind of a strange short growing season here if you don't have enough water to irrigate. Second week of April is usually safe to start putting things in the ground, around late June or July, no rain till September/October the ground get biggish cracks in it and some trees die. So 9 months of rain, then nothing and not particularly cold, summers can have a week or so of triple digit temps or not.
I've gotten tomatoes a couple years and they were fantastic, but usually too short a season and they get rained out. Not to mention when it's too hot, they don't like it either. Can get two crops of cold weather crops usually and can plant garlic spring, then again after summer when it starts to rain.