Convicts are cool little fish, but you have some things to consider.
Their fry are very hard to rehome. Indeed, no one wants fry, so you have to grow them to close to 2 inches and then beg a store to take them. Growing them calls for more space than you currently have, so you'd be stuck with getting a large tank to rear them in. Meanwhile, as soon as the young are moved (keep them with the parents so they can learn parenting), the parents will spawn again. And again. And again. And after that, they'll spawn again....
In our aquarium club, when bags of one inch convicts come up for auction, even with 50-100 people in the room, there are often no bidders. I know people who have bought bags as feeders for larger Cichlids, only some convicts have survived and taken over the tank when they began breeding. All that makes them wonderful creatures, but it does pose difficulties for you now.