Rental Car vs Private Driver (Suchitoto -Ruta de Las Flores)

Hi everyone, we are trying to decide whether it makes more sense for a rental car or private driver. We have a four day trip planned (arriving 6am Friday and leaving 11pm on Monday) at the end of August. With such a short time we are only picking a few sites to visit. Upon arrival we play on going directly to Suchitoto where we will stay all three nights. However, we do plan for a full day trip to ruta de las flores and maybe folding Santa Ana and/or joya de ceren in the same day.

Does anyone have any insight if it would be easy to find an all day driver from Suchitoto and the ease to get to / from airport to Suchitoto? or do you think a rental car for all four days would be easiest?