Hello! I just moved into a house with a huge garden, including two raised beds covered with crabgrass and other weeds. I know its late in the season, but I just ordered vegetable seeds such as peas, cucumber, lettuce, and carrots for a fall planting. While I wait for them to come in the mail, I'd like to prepare these raised beds. Should I remove all the weeds and leave bare soil, or should I leave them (till them into the soil somehow)? Also, there is an abandoned compost pile, should I mix some of that in?

THANK YOU!
Jenn