There's also talk of Andries, and or Schmitz coming back. Bottom line is we'll be in good shape no matter what, but it's still fun to speculate on.
If we started the exact line-up listed in your post, we'd lack experience, but not maturity/time in the program, and that's important. Obviously you don't just replace this kind of OL, but we'd start Ersery (3rd year), Ruschmeyer (6th year), Boe (5th year), Shaw (5th year, 3 @ Utah St, 2 @ Mn) & Guedet (4th year). That's a pretty mature group, who've been in the system, practicing and hanging with the outgoing Sr's for a while now. It'd be a step down of course, but it would not be starting from scratch imo.
Of course you add in Andries, and/or Schmitz, and suddenly we become very strong again. Then there's the portal. I have to think our style of play, and the praise our OL get would be very attractive to potential transfers? If we get some OL drafted this year, even more so!!!