Do I need a Smith machine combined with a functional trainer?

Combo Smith/cable units save floor space and money versus buying separate pieces, and they're popular for solo lifters who want a built-in spotter for squats and bench. The tradeoff is that the cable system on combo units is often less refined than on a dedicated functional trainer, and the fixed Smith bar path isn't ideal for everyone. If cable work is your priority, a standalone functional trainer will feel better.