I’m not so worried about SA-7s - they have a nasty habit of not working at all, and an even nastier habit of exploding-on-launch. Some of them even have an amusing habit of circling back on launch and blowing up the guy who launched it.
You would have better results with massed rifle fire.
The CIA shipped a batch of 300 Stingers to the rebels in 1986 and 700 more the following year. Where are they?
The mujahideen also dispensed Stingers to their Islamic allies. Among the lucky recipients were rebel groups in places like Tajikistan, Chechnya, and Algeria. Meanwhile, the Pentagon approved the sale of Stingers to at least 21 countries, mostly NATO allies but also Israel, Egypt, Saudi Arabia, and South Korea. The Soviets stole design data and Stinger components from the Greek army and used the information to build the SAM-14 Gremlin, which is said to be a virtual copy of the Stinger