The only problem with those older futaba sets is that the servo and reciever connector setup has since changed to a more universal system, with pins on the reciever instead of on the servo's in your case. Unless you modified the servo's (it works i've done it) and replaced the plug with the newer one, you won't be able to interchange any of them with newer recievers...
The transmitter as said should be fine, i've been using an ancient 2ch AM for ages for ground based rc things. Wouldn't trust it in the air tho!
EDIT: sorry missed what pete said
But yeah, those servo's are worth keeping.
/EDIT