How do you grow a CRM startup?

I'm reaching out for some advice on boosting sales for a startup CRM project I've just taken on for a client. I do marketing freelance on the side while managing my own small business. Here's what I've come up with for marketing outreach: Email Marketing, Social media ads, and regular organic posts. Any other suggestions for increasing sales?

For email marketing, I'm using WarpLeads as my leads provider (since I get unlimited leads from it) and Instantly for sending out emails. Social media ads are managed through Business Suite. I'm also considering short reels on various social media platforms for organic posts.

Any CRM marketers out there willing to share their experiences or offer tips?

Thanks a bunch!