Advice re Dublin trick and baggage

Hello All,
We have booked UC rtn from Dub - Man - Las with a 5 hour transit otbound at Man. The saving was enormous so well worth the inconvenience of the one way trip we need to make to Dub.
The itinerary from Expedia shows different PNR's for each sector with the first sector (Dub - Man) operated by Aer Lingus. All sectors appear on the VS website, although the Dub - Man sector is greyed out and cannot be accessed. We have a 5 hour transit time at Man before continuing on VS85 to Las. Aer Lingus charge £25 per checked bag with a max weight of 20kilos and excess charges apply thereafter.
Here's the question that I hope you can advise on. We don't need our suitcases in Dub at all. Is there anything to stop us meeting up with our family at Terminal 2 in Man on the outbound leg, collecting our cases from them and then checking them in with VS at Man? Doing that would save us £100 and be much more convenient than humping them out to Dub.
I can't see any problem, but Mrs QH is worried that as we will have already begun our journey and completed our Dub - Man sector it will create issues.
Any advice would be greatly appreciated.
We have booked UC rtn from Dub - Man - Las with a 5 hour transit otbound at Man. The saving was enormous so well worth the inconvenience of the one way trip we need to make to Dub.
The itinerary from Expedia shows different PNR's for each sector with the first sector (Dub - Man) operated by Aer Lingus. All sectors appear on the VS website, although the Dub - Man sector is greyed out and cannot be accessed. We have a 5 hour transit time at Man before continuing on VS85 to Las. Aer Lingus charge £25 per checked bag with a max weight of 20kilos and excess charges apply thereafter.
Here's the question that I hope you can advise on. We don't need our suitcases in Dub at all. Is there anything to stop us meeting up with our family at Terminal 2 in Man on the outbound leg, collecting our cases from them and then checking them in with VS at Man? Doing that would save us £100 and be much more convenient than humping them out to Dub.
I can't see any problem, but Mrs QH is worried that as we will have already begun our journey and completed our Dub - Man sector it will create issues.
Any advice would be greatly appreciated.