I hope you find a solution DeVon. I'm the exact opposite of you -- I'm 5 foot and chairs never go low enough to accommodate my height, nor are the seats small enough for my thigh length. The only solution I found was to get a foot stool and I even had to saw the legs a little shorter. By elevating my legs I can sit further back and it tilts the chair.
Crowded restaurants are a pain and I can never sit in a high traffic area. Wait staff and even managers have asked me if I'd please bring my chair closer to the table. The looks on their faces are priceless when I tell them no, because I'm forced to sit on the chair's edge. If I sit back all the way, my legs will stick straight out as the edge is usually under my upper calves.