I have had big gardens for 40 years. I second the advice on Territorial seeds. They are a NW company and try to select varieties that grow well here. A couple of tips:

Grow an extra early super sweet corn but do NOT grow two varieties near each other. Add at last 20 day to whatever maturity date the seed company advertizes. Only grow very early tomatoes. Early Girl and Sweet million are proven producers here. Do not sprinkle tomato plants. They typically need very little water or fertilizer. Too much of either will give you tall plants and very few fruits.

Plant a small amount of lettuce or spinach every two weeks, so you never have too much or too little.

Good luck. Nothing like a fresh garden salad, corn on the cob and BBQ salmon.