I think a couple of weeks ago, if you were told that both Mack Hansen and Hugo Keenan were going to be out, you'd be worried.
But Calvin Nash has been superb since he got his opportunity. Ciarán Frawley's versatility has probably held him back up to now but he has played six times for Leinster at full-back this year, so I think Andy Farrell had him earmarked as the back-up for Hugo Keenan and I think he will be fine.
He's a really confident player and I'm looking forward to seeing how he goes.
On the bench, we've gone for that 6:2 (backs-forwards) split. We did it for the first time against France in the opening game but you look at the quality you have coming in there in the last 25 minutes.
James Ryan, Ryan Baird, Jack Conan in particular. You've Rónan Kelleher at hooker, who would be on any other team only for Dan Sheehan, and I'm interested to see Oli Jager.
If he comes on, he will be the 31st player to be involved in the campaign and we're only going into our third match, which shows the strength in depth that Ireland have now.
It's always the way it is with Wales. I saw Rob Howley was quoted as saying that Wales must 'create chaos'.
I think they will chase Ireland's line-out but even more so I think they will chase the breakdown.
Ireland's whole attack is predicated on getting that ruck speed in under three seconds, which they've been the best in the championship at, so Wales will certainly attack Ireland there.
But you've got to look at this Welsh side. Since they played last year, Wales have lost iconic figures like Leigh Halfpenny, Liam Williams, Dan Biggar, Ken Owens, Alun Wyn Jones, Justin Tipuric and Taulupe Faletau. You don't replace them overnight.
In consequence, I think Wales have actually done reasonably well, even though they've lost their opening two games.
The one thing that Gatland always does - I've great time for Warren Gatland - he always gets the best out of what he has.
Now his resources this time out are quite slim, as I've just indicated, but you look at the opening two games: They only lost by a point to Scotland in Cardiff and only lost by two points to England in Twickenham, so they're a resililent bunch but this is a special Ireland team.
Ireland have only lost two of their last 40 tests in the Aviva Stadium, which is an incredible record.
Elsewhere, I think Scotland-England is the game of the weekend outside of our own match. Certainly I feel it's now or never for Scotland.
They've been knocking on the door for so long. England have actually picked a stronger side, fellas like Ollie Lawrence coming back into the team.
But I haven't been impressed with England, so I'm going marginally for Scotland without any huge confidence.
But one way or the other, whoever wins that game, given that those two teams will be Ireland's remaining two opponents, certainly it's going to be very interesting.
France against Italy, a home game for France, you'd have to expect the French, despite their poor form, to come out on top in that one.
Donal Lenihan was previewing the Guinness Six Nations clash between Ireland and Wales on RTÉ's Morning Ireland
Watch Ireland v Wales in the Guinness Six Nations on Saturday from 1.30pm on RTÉ2 and RTÉ Player, follow a live blog on rte.ie/sport and the RTÉ News app and listen to live commentary on RTÉ Radio 1.
Watch France v Italy in the Guinness Six Nations on Sunday from 2.30pm on RTÉ2 and RTÉ Player.
