I've heard of people getting two birds and having it be a successful relationship for everyone involved, but you have to be absolutely certain you're committed to both birds and their care. It's all too often that people get birds and have then end up in rescues. If you have rescues in your area, I would suggest finding one and seeing if they need volunteers. That way, you're absolutely certain you're both "bird people" and are prepared for the duties of bird ownership.
Aside from that, I imagine having two people to split the work between would be helpful. Right now, my boyfriend lives in California while I live in Pennsylvania, so it's just me to take part in the bird care responsibilities. I don't really mind cleaning the cages, but it is the worst part of owning birds in my opinion. And no matter how much you clean, you still seem to have poop and bird food left behind. If you don't mind living in an apartment that is in a constant state of bird messiness, then you should have no problem owning a parrot.
Noise was also a big consideration for me as I live in an apartment as well. I'm not sure how loud caiques are, but if your neighbors and landlord don't mind and you can live with the noise, it could be a nonfactor. Be advised, though, that birds make noise very early in the morning if they can see sunlight. My Green Cheek Conure has taken to playing jail break with his cage and climbs from under the sheet I use across the budgies cage and flies to me and wakes me up with a loud "EE EE EE!" Cute, but startling.
Also be prepared for the costs of the birds. Caiques alone cost, on average, $750. I would double the initial cost for the bird. You'll need a big enough cage for two birds, perches, toys, food, and vet bills. My avian vet charges $200 for the initial "new bird" visit. Each visit after that is $62. Tests, medications, and specialized treatment are much more expensive than a dog or a cat. These are also yearly costs.
People also don't tell you how quickly a bird goes through perches and toys. And my god, those things get expensive and are just as addicting for the people as they are for the parrots. Once you get the bird, a bunch of us here have favorite online toy shops that we can help you with. Most of the small bird toys are priced between $5 and $10 for basic toys and go up in price from there. Perches come in a wide variety and are also fairly expensive, though sometimes you can find great deals. I ordered three manzanita perches for $6 on EBay a while back.
For food, you should be aware that seeds probably aren't the best diet, which a breeder will tell you. If you're purchasing babies, that shouldn't be a problem as a good breeder will wean them onto pellets. But pellets are also expensive depending on what brand you use. Your best bet is to find the pellet the bird prefers and buy it in bulk. It saves costs on bird food and time in having to go to the store to buy it every month. I currently have 40lbs of it in my refrigerator and that should last me a year.. hopefully.
All in all, it's a huge consideration to get even one bird. A lot of people wonder what they were thinking when they brought their feathered friend home and can't deal with the work, the noise, the mess, hormones, or all kind of other issues. There's not a lot of caique owners around here, but we're all pretty willing to help when we can. And unless you have any species specific questions, we should be able to help you.
I'm done rambling for now.
"Mockingbirds don't do one thing but make music for us to enjoy. They don't do one thing but sing their hearts out for us. That's why it's a sin to kill a mockingbird."
- Harper Lee, To Kill a Mockingbird
