Maybe you could come with international drivers license and just convert to a 2 year" I'm not sure but you could message an agent.
I've done the license myself 2 times, last week used an agent for the first time. The process was no booking visit needed, agent arranged certificate of residence, Dr's certificate, transport, paperwork etc. All I had to do was provide 2 photo's (2 licenses) sign some documents and do a colour test at the DLT. (no reflex / depth perception test)
Departed central Pattaya 9am back just after 1pm. You could drive yourself and leave when you've got your license that would be quicker.
For 2 licenses all fee's charges certificates + Dr's 6,500 baht. There was a fee in that amount of 1,000 for a process requiring no booking visit. I could have done it for 5,500 but I would have had to make a booking visit.