GC Seaway is by far the safest on the GC. Tweed is next, but can get sketchy on a run out tide with some swell running. Next is Currumbin, but if it is your first crossing this is not for you. Cross Talle off your list.
When crossing the Seaway go straight out for a couple of hundred meters before changing course - there is a shallow bank on the end of the south wall and an even more shallow bank just north of the entrance that waves will break on in a medium swell. As with all bars, run out will be the most dangerous.
I always suggest you go and watch the bar the day before on the same tide you are going to be crossing in. This will give you a fairly accurate idea of the conditions you will cross in. And take note of the track other boats take when crossing the bar.
Lastly, don't be a hero - if you are unsure, don't go. Try to get someone to take you on your first crossing, either in your boat or follow them in their boat.