Finally broke down and watched some Jang reviews last night for the TLJ sets, hoping to save myself some money. It kinda worked.
Star Destroyer is confirmed. Looks like a good set and an acceptable purchase at MSRP.
The First Order Walker will probably be a "wait for a sale" set. I didn't see a lot of great detail for display purposes. It appears to be more of a toy than a display piece, which is fine, but not for $150.
My concerns about the Resistance Bomber were confirmed. It's a great, original, well-designed set with great minifigs (the helmets!) and it actually stands upright on its own. It is also priced ridiculously. 780 pieces for $110. I can see this thing getting an instant Walmart "rollback" to about $89 and then dropping from there. Don't think I can support the way Lego has priced this one, even though it otherwise looks amazing.
Decisions!
The resistance bomber looks great but I would recommend you hold off on buying it. Same with the others really. I will say that if star wars sets are pretty much the only stuff you buy and money is not an issue, then go for it. Of the three sets you listed. I'm pretty sure the resistance bomber will get the greatest discounts. You also have to consider now that star wars sets will probably see faster clearances now due to all the additional sets and waves coming out faster than ever and limited retail space. After several years of seeing fewer and fewer deals out there, I have noticed a sudden increase in decent clearancing of sets. It will at least see a 20% off or more this Christmas on Amazon.