I don't think you'll have drainage issues. They're an uncontrollable weed here in the Pacific Northwest. I spend at least one full work day in my yard pulling the roots and offshoots out from between and under my fence each year, And my yard is a 5,000 square foot city lot. And typically a...
I started (outdoor) Peas, spinach, lettuce, Arugula, and Cabbage this last week end. Looking forward to spring when I can stop with the cold weather crops.
Unfortunately my space for indoor starts is taken up with baby chickens so it's all going to be outdoor starts this spring.