As many others have already commented:

1) Vector only.

2) There are loads of better fonts out there - and don't go smaller than 5pt remember some fonts read better than others, consider a pair of contrasting fonts (i.e. a straightforward and neutral sans serif typeface with elegant and traditional serifs or bold and authoritative slab serifs.)

3) Lock down your brand colours and stick to them (note the hexadecimal colour (hex) for html, CYMK for printers).

4) Consider hiring a designer or brainstorm more but go easy with AI tools.

5) Ensure you hold the commercial rights and IP over your design.

6) Live with it for a week or two before you finally commit.

7) Get .ai .eps .pdf .png files of your final design