My family is looking into possibly spending a few months in Ibidan, about 80 miles from Lagos, on a mission trip. We have 4 children, ages 2-16 and will be assisting at a Christian based church/school. We are both well travelled and lived abraod before, so a basic, condervative lifestyle would suit us.
We have some queries though:
1) What kind of monthly expenses should we budget for with regards rent in Ibidan?
2) How is the sanitation?
3) Is it difficult to obtain visas?
4) What kind of food costs should we expect (compared to US prices)?
5) Is the area safe?
Your monthly expenses will depend on your lifestyle. Ibidan is likely to be much cheaper than in Lagos (which is one of the most expensive cities in the world), but you should still expect to be shocked by how much higher your monthly bills will amount to compared to the US, especially if you intend to eat Western food as you do at home. Have a look at Expat Arrivals' Cost of Living in Nigeria and Accommodation pages for more information.
Regarding your family's visas, you can find out everything you need to know on the Visas for Nigeria page.