Going to be in SJ for 28 days and taking a language school. Looking to get a prospective on what kinda of buget to shoot for from those who have extended stays. School, apt are already paid and not put into the equation. I wont be "playing" as I will be spending time with a non worker I have met on previous trip (ok, one session a week at an MP

, gotta be discreet). thursday throug sundays I will be out of SJ seeing the country. I factor this into the budget.
So far I am at $750 to $800 a week, food, travel (not staying in high $ places) and taking mepe where ever I go. Caribbean one weekend, west coast the other then la fortuna one of them to see arenal and the falls. I may bump it up a hundred a week but I am doing very little drinking and parting as I will be studying. So basically, 4 days a week I am studing, one night drinking and clubbing (SJ and San Pedro) the rest of the time I am away. Sound good or am I cutting myself way short on cost or way over? Just getting a general idea from those who reside there or have extended stays. Thanks in advance.