I think willow that you mean rebuild...

And indeed rebuild would also be my choice of weapon against workshop reasons: 1) it bounces everything so it ups the storm count
2) under trinisphere everything costs 3 anyway...
With regards to fow or duress I would say fow if you don't have trouble pitching cards...and duress if you do have troubles...
About the deck itself: I would still prefer TPS in these times filled with non-basic hate...you generally go turn 1 therapy/brainstorm turn 2 rector with ritual and flashback...but you do need lands to get WB and occasionally enough mana to cast rector with moxen...Wasteland can really set you back quite a lot...
Not to forgot that the WS match should be a little bit less favorable because you can easily get locked with crucible/wasteland or locked because he wasted your land under a trini...
I don't think the meta is right now good for this sort of deck (I think it used to be called rectal agony) especially the non-basic hate worries me...and I don't know if your manabase can hold together if it needs to support 3 colours and basics (3+)...(testing should reveal if it is a problem or not)
As a side note running trix (3 illusions, 2 donates) in your sideboard would improve your workshop matchup...

(ie. it is easier to resolve 2 spells than 10)
Nice work btw...
