hi
us parents always do whats best for our kids, if that is waiting for your kids to be a little older that is ok.
if you take them as babies that is also ok.
whatever your choice will be the right choice for you, mostly because when you decide to do any trip you will plan and accommodate for your family.
just think of all the shopping you can fit on pushchairs and if you have to fly you will get loads of room as long as you request a sky cot lol
it will be fabulous,
we stayed in a villa in 2010 when my 2 ds were 11 and 8. we are going back to a villa this time [they are now 13 and 10]
although if you stay on site the travelling will be much easier to go back for nap etc.
sara