Hall County is looking at hiring a financial adviser, Atlanta-based The PFM Group, which has done work for MARTA and the likes of Cobb and Gwinnett counties. The Hall County Board of Commissioners is set to decide the matter at its regularly scheduled meeting at 6 p.m. Thursday. Still being considered is whether to pay the firm an annual fee of $25,000 or according to hourly rates of $200 to $250.