Hi John, when I had my inner wing liners off that's what I did, just coated everything with either Waxoyl or ACF 50. Found it easier to apply it with a small paint brush as spraying it on it tends to splash everywhere and it ain' t cheap stuff to buy.
As for your brace bars, I would assume they are there for rigidity so taking them off and refitting them shouldn't be an issue, I would probably do those with Waxoyl as it tends to stick better where it's exposed. Remember with Waxoly you need to warm the can up before spraying it on, just put it in a bowl of hot water and leave it for 15 mins, it covers a heck of a lot better when it's warmed up first.