Boomer F4 & Wells F5 v Wells F4 & Gibbs M6
I was going to say the Boomer option easily, but thought about it a little more.
Gibbs is cheaper than Boomer and may outscore him. He might be a similar pick to Jack Steven last year, who was excellent for me - I basically straight swapped him for Beams around the byes when he was averaging around 110 or so, from memory.
With that said, I picked Steven as a clear stepping stone, on the basis that the Saints had a great early draw. Gibbs may not have quite enough upside to be a good stepping stone, and it's actually Boomer's team that have the best draw pre-byes. Clearly a stepping stone involves a trade as well, whereas I see Boomer as a solid keeper.
So the short version is "still option one", but perhaps more narrowly than I initially thought.