You should be able to use your Vivitar 283 on the F3 without a problem. First if you 283 is of a later version made in China then it has low voltage trigger. Second I have used my F3 with various high voltage flashes like Metz 45CT1 and 60CT2 without problem. Third I verify that the F3 has dry contact and not a solid state switching device.
If you buy another flash I would recommend the SB-16 with both the foot A and B. Foot B for all other cameras and foot B would mount on the F3.