I think we have to accept that at Ibrox, Tavernier is going to spend a lot of time high up the pitch. If you go with Swanson, you just end up with an attacking player doing a lot of defending.
Craig maybe isn't ideal but he scored off the left at Accies and does have decent delivery. Importantly, he'll do a job on Tavernier, help Tanser and also has the discipline to fill in if Tanser has an opportunity on the overlap. Wotherspoon is the other option but I'd go with Craig. Alston has the legs to get about the pitch which is why I'd go for him over Wotherspoon on right.