Sounds like you will be pressure canning? That's something I have yet to attempt.
We use a lot of bell peppers here. Those freeze well enough and are very easy to prepare for freezing. It's as simple as clean, core, cut, pat dry and vacuum seal then freeze. The texture isn't as crisp as fresh but is still good for cooked dishes like fajitas.
Not sure what part of the world you live in. Strawberries are hungry plants so need fed a lot. I lift, separate and amend the soil for mine pretty much every other year. They like loose rich soil in my experience. In my semi-arid climate I have to water them daily when freshly planted and 3-4 times a week during the height of summer. Not a light watering but a good deep soak seems to work best.
Different varieties perform differently. I grow Fort Laramie with the best success for bigger berries.