Ask HN: Choosing the best software to help build software

We are a 3 member team working on an Android, iOS, Windows Phone App, with a Python (Major) / PHP (Minor) backend and with PostgreSQL DB(Major) + Mongo DB (Minor) Components.

We are currently using GitLab as our Repo, and Digital Ocean as our hosting provider

What should we do about the following: 1.) Whats the best Bug tracking + idea board + task platform? We are debating between Asana and Phabricator 2.) We will likely need a CI as well, We have no clue about what to use, everything seems really expensive. 3.) Should we change our hosting and repository provider?

Anyway, we are trying to get something that will balance cost and ease of setup & use. Thanks for the help