FFE BO depends on the map and what I scout. If I find z first and he's doing a late pool/hatch first I nexus first (unless I can be a jerk and wall between his main and nat on tal darim with cannons). If not I forge first (usually ~13), then cannon/gate and nexus. I don't really know what I'm doing with ffe's tbh. It's why I don't like doing them.
for a build order - unless you see poot first - if its a big map with a decent choke point to wall off:
9 - plyon
13 - Forge
15 - Nexus
Then get your wall and cannon(s) as needed from there.
you want to get a zealot first then sentries constantly from your gateway... no need really to crono Warp Gate (unless they are pressuring you - or look like they will) then you can transition into the gas heavy units + tech when you've got 8 or so sentries...
1 gate FE is totally safe - same Idea.. zealot and sentries.. the pylon at ramp to half wall from ramp to nexus is usually the go.. again - zealots and sentries are what you need in early game.. until zerg gets roaches (and more that 5-10 at that) you don't really need many, if any stalkers... get stalkers when you've got enough zealots to hold the line (too many = some not attack/stuck behind other zealots...)
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