I'd think you could get by with maybe 4 bats. 2 in the 32/22 size, one 33/23 and one either in 31 or 34" based on the size of your kids. If you shop around you could probably pick up some decent bats for around 600. A fund raiser or two could cover that pretty easily. Perhaps a sponsership from a local business or two.
I wish. We had to get some of the girls gloves because their parents cant afford them. The area we are in doesn't exactly scream sponsorship, we are working on it though.