I'd r3 Namor to get the TB obligation out of the way and pump sigs as I go as a long term project. None of the champs listed should be r3 in their current state so the r3 is strictly for TB purposes. A duped Namor checks the TB box short term and becomes a prestige factor in the long term. Most sensical strategy if it were me and I was building an account again.
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Get to TB quickly no matter who you pick - you wont regret it.