Forget about the picnic BS. Wait until she texts you anything and say "great to hear from you when are you free to get together" if she gives you a date and time say great "I'll pick you up Saturday at 8:00". Plan a fun date. Not the movies or going to her house. If she doesn't make a day and time for you. No problem it's her loss and tell her to call you if she changes her mind.
Your problem is you are to indecisive and are not congruent with you words. You say you don't want a friendship and only something romantic but all you are doing right now is allowing her to friend zone you.
