I'm not sure I would go with HubSpot at all - pricing jumps significantly once you outgrow Starter.
Outbound - If you mean cold outreach, you can send 1-on-1 emails but not in bulk via campaigns or automations.
For past clients on a budget I've used a combination of Snov.io for prospecting and outreach and Pipedrive if they want a traditional CRM to work with. Or build out a system in Notion.
That said, Hubspot, if you can afford it, is a great solution.