While you may start the year with 20 employees, consider that some may move on to different opportunities, leaving your team understaffed and overextended.
However, both can be interactive, both offer almost the same functionality - and there is no reason you can't employ both in your performance monitoring.
They'll be better prepared to act to reduce unwanted turnover going forward.
You could start by putting them on a performance improvement plan with clear expectations.
For example, you can design motivational and achievable task targets with this free template.
Budgets are often prepared at the account level or by project.