I'd mix things up a bit, without completley changing the first 11. Maybe 4 or 5 changes, would start Gray, Swanson and Bartley, maybe Porteous as well if fit enough. Our squad right now is small enough that there's only so many changes you can make in any case.
Still in pre-season and players need games in the legs. I'd be tempted to start David Gray in place of Whittaker, and give Sean Mackie the full game in order to give Lewis a wee break after the summer and his extended season he had away with Scotland. Bartley would come in and get 90 minutes (for me) assuming his ankle is fine, and perhaps Swanson in for Boyle so he isn't risked for the next tie. Would also rest Kamberi seeing as he is on a booking with Murray or Lewis Allan coming in.
So 5 changes from yesterday would probably be wise.