Peru coming closer

Which option to go with....

1. Smaller and newer organization (few volunteers...#??), not as many resources, lesser volunteer monthly fee/donation (flexible payment schedule), may not have spanish classes nearby which I would benefit from, room and 1 meal, less structured volunteer program

2. Larger (50-100 local/international volunteers @ a time), more established organization, volunteer monthly fee is more than twice the fee/donation of #1 (full payment in advanced), offers 1/2 off spanish classes at nearby school, room and 3 meals, more structured volunteer program

It looks like for Peru, I dont need any sort of visa or vaccinations....???? one website recommended yellow fever if i go into the jungles (which i may want to)....

Previously I wanted to go for #2.. but it looks like finantially, it'd be smarter to go for #1.. it seemed like it would be "easier" for me to do #2 because alot of things were sort of structured out already (including the availability of spanish classes).. but it may be more interesting to go with a newer organization and be a part of the growth... and a smaller organization may be more intimate...