I would use the Test enanthate if i hade a choice, but thats me. I dont like waiting 3 weeks at the end to start pct, as opposed to 2 weeks with enanthate.
Sustanon also hurts sometimes. Enanathate is also usually cheaper.
It also depends on what kind of shit you are getting though. If you have your choice of mexi garbage enanthate and quality sustanon, get the sust.
As far as your letro, 1mg ed seems a bit much for the dose you are running. try 1mg eod. shit, you may not really even need it, but if you want to use it, start low.