I think DD is doing really well. I second the fold up potette, brilliant for taking about with you, and away on holiday, beach etc. You may have to start taking a potty everywhere, as she seems upset at using a nappy or big toilet. It could set her back if you don't supply a potty when she needs it, she may conclude that you don't actually want her to use one and start wetting her pull-ups again. Potty training should really be done when the child is ready, not at a convenient time of the parents choosing. You may find that you actually carry less stuff with you, than when you carried a bag full of nappies! You can make savings by making your own potette liners, depending on the size of the one you get, the small one can take large nappy sacks, the potette plus will take pedal bin liners, and you can use cheap sanitary pads or sheets of kitchen roll for absorbency.
If you decide to put her in pants full time, remember to dress her in easily accessible clothing, so no tight jeans with buttons and zips, no dungarees, no bodysuits. You will have to help her undress, and quickly when she needs the potty, so elasticated waists are best. I always expected to have to pull down/up clothes in the early stages of training, because they don't have the speed and dexterity in a hurry! You need to wipe them anyway after a poo. The clothing confusion varies enormously from child to child, it's something they have to get used to. My DS was aware that a pull-up was an emergency back-up in case of an accident, and would still ask for a wee or poo.
Absorbent pads for her to sit on in the pushchair/carseat/supermarket trolley/cafe seat are a good idea; either the disposable changing ones, or washable types, will save a flood. Take lots of spare clothes out with you.
You may find in a few months when you are due to go away, that DD will be OK with using a toilet, so you could get her a folding loo seat reducer. And get her used to being held over the ground to wee outdoors, for when there is no other option!