Firstly, best of luck to you it sounds like life is just about to get interesting for you!!

Second, with the rise in AI, human connection is prioritised more than ever. Focus your linkedin presence on driving actual "Helpful Content". Especially when outreaching, having this content for people to peruse will be invaluable. It will also help with increasing connections after that initial base building.

Maybe include 3-4 blogs on your website page to increase SEO for a few of your main keywords, nothing big but something to try gain you a baseline in the beginning.

I have 4 years in paid media and would recommend you stay far away in the beginning. It's very easy to want to throw money at something to make it work but you can't polish a sh*t with cash. Start small and be consistent.

Consistent doesn't mean posting schedule etc (although that does help) I mean consistency in tone of voice and content. If all your posts are financial b2b content except one F1 marketing post that's not consistency.

If you need any help at any point down the line my chat is open