Just some thoughts.
Watching Holy Cross from 2021, I think Furman is going to have to find some depth at WR to match up with Roper's preferred offense.
As I watch their games from this past season, HC is mostly in a 3WR, 1RB, 1TE set.
Holy Cross's TE was very active. Like Furman has done with Miller, the Holy Cross TE would line up in line, flexed in the slot, or in the backfield as an H Back. In several instances, HC would use two TEs - one in line and one lined up behind him as an H back. If these new young TEs are ready to go, then I think they'll have opportunities on the field and to give Miller a break (which was the entire stated reason for moving Henderson to that role to begin with).
Looking back through Furman highlights, we spent most of the time in a two back set. I did find a few examples of Furman in a more Roper-esque 11 personnel sets, which used quite a bit against Western Carolina.
This may be a good look at the future set up - Roberto as the single back, Harris, Bell, and Peterson at WR, and Miller at TE.
Similar set up here, but I think the slot receiver is a TB, not a WR. Would be a fairly easy substitute WR for RB.
Both offensive systems are built to be physical. I think Furman has the personnel to do a lot of what Roper is going to want to do offensively.
Perhaps the most notable difference to me is that Furman has generally wanted to use an extra blocker (FB or TE) to account for numbers in the box. Roper's system is often going to rely on the QB to block the unaccounted for defender "with his eyes." That is, there will be a relatively straightforward set of keys where the QB has the option to give or run depending on what the isolated defender does. This is going to require the QB to be willing and ready to run the ball as a key component of the offensive system.