It won't help to get new tires if your shock absorbers are bad, causing excessive tire wear.
Repairs often can affect related components.
If major work is required, it sometimes can be spread out over several months, with small portions being done at each of several visits. This may help you better budget your money and avoid giving up your car for an extended period. When there are several options, this simple question to the mechanic may bring a surprising response. It may turn out that the mechanic would go for the simplest, least expensive repair. It's worth asking.