After spending his first Christmas away from his family at Portrush, Co Antrim, to enjoy the holiday in the US, 33-year-old McDowell and his bride-to-be Stape are looking forward to planning their forthcoming nuptials.
The couple recently moved into their new home in Florida and, after talking wallpapers and curtains, are now deciding on flower arrangements and menus.
Interior designer Stape (33) told the Irish Independent that they were hoping to mark the occasion on both sides of the Atlantic so McDowell's Irish contingent can share in their special day.
While she would not reveal any particular dates, it has been reported that the pair were planning to wed towards the end of the year.
"We've got some dates in mind and we'll definitely be coming back to Northern Ireland at some stage to do a separate ceremony there with Graeme's family and friends," she said.
"We've got it figured out I think. We're both pretty low key, but we have a definite idea of what we want.
"It's more about the company involved and the location, that's the most important thing to us. I think everything else will fall into place."
The pair, who met when McDowell hired Stape's company to decorate his Orlando residence, got engaged in November.
Ryder Cup star McDowell proposed to American-born Stape on the helipad of the famous Burj Al Arab hotel in Dubai.