My team and I have about $600,000 left (of $2 million total startup) to raise using convertible notes.

Looking for any tips or best practices associated with using SAFE notes.

What do investors think of SAFE notes?
What would an investor rather see: lower valuation cap, higher discount, or something else?
What factors are most important in structuring convertible debt deals?
Any tips for managing multiple investors with static-round funding instruments like convertible debt?