Is it OK for the girlfriend to make a picnic on the second date?

I'm going out with a guy, but it's kind of complicated. We've been flirting with each other, and hinting and being really *really* close friends for over a year now, and we see a lot of each other, so everything kind of counts as a date, but our "second date" is in a few days, and he's really indecisive, which I don't mind too much, but I can't afford to pay if we go somewhere nice, which we probably would, and I'm not going to make him pay again, so would it be weird or not if I made like a picnic and we went to a secluded spot for a few hours, or should I plant the idea in his head so that it's his plan?