OP - just to reassure you, brreatsfeeding does not make your baby any more or less clingy. if I'd had DD first, I'd probably wonder if it did too, as she is still so clingy, even now at 15 months (she is still b/fed). She's a total Mummy's girl and could happily live without another soul, even her doting Dad.
However, DS was my first, and he has always happily gone to other people, runs off immediately at parks and groups with never a backward look and forgets I'm even there until it's time to go home. He's always been like this and was b/fed until 13 months.
Clingyness or otherwise, is entirely down to personality, so please don't worry that you're making things difficult for her in the future. :)
You're really on the cusp of things getting so much better at this stage. I remember it well. You're in the verge of weaning, so they're nearly ready for solids but it's still 100% you providing 100% of their nourishment. And compared to when they were newborns, they're so much bigger, aware, more resilient and more demanding. It is so tough right now, I remember being completely exhausted.
But - you're about to move to solids and suddenly your role is going to dimish hugely. And what you're left with when it all calms down is an easy way to feed your baby - your boobs, your baby and nothing else - no bottles, no washing, no faffing.
This is really when it all comes into its own, but it's also when most people give up, since the ambiguous message of breastfeeding exclusively for the first 6 months suggests this is as long as you need to do it, as opposed to being what babies should have until they start solids - with breastfeeding continuing alongside (in an ideal world).
I also skipped bottles entirely with DD and went straight to a cup when she started on solids. She's never had a bottle and it's been a complete absence of stress. Getting DS to take a bottle was a nightmare that I didn't want to repeat.
Good luck with whatever you decide to do.