Did you know asparagus beds can last as long as 109 years!? Yes, I found that out when I put asparagus in last year and was reading up on it.
The secret to the asparagus is to heavily feed it with composted cow manure. You might have to buy some bags this year but eventually you can set up your own compost for it in the future. Doesn't have to be composted cow manure every year, but the first year that's what I'd go with.
Wow, lucky you. Putting in asparagus is a major PITA. You have yours already started. Also, it takes two years to get asparagus, so I won't even have any this coming spring. Spring 08, yes.
Strawberries in the tub sounds great! Can you believe I finished putting in my heirloom strawberry bed right around Christmas? That's because it's been so warm here. I'll take a photo one of these days and post it. The strawberries really thrive on the cool weather.
The rest of your plan sounds great. You are really lucky she amended the soil.
Cher