[Amps] T/R Relays ?

[Ed Stallman]

  my 6m amp GS35b  T/R relays are Tohlsu CX600 . I would like to us 
breakin and do away with the PTT I'm using now, I have a sequencer 
that will key the Amp 30 (MS) before the radio... Radio delay set to 
300 (MS) to do away with relay chatter . Also have a buffer relay to 
go between radio and sequencer .

My Setup will be

Radio keying the Buffer relay
Buffer relay keying Sequencer
Sequencer keying Amp first , then  30 (MS) later keys  radio
Radio breaken set to 300 (MS)

Am I safe with this setup ? don't want to arc relay contacts

Thanks Ed N5DG