[mark_l_watson]

I was paying for G Suite earlier this year with my custom domain and was very happy with it (especially cloud search), except: I have been using GMail since almost 3 years before it became public and there was no way to merge my old persona with the new G Suite account. I had to switch my Google identities back and forth. I decided that this was too much of a hassle.

[junar]

Do you use Chrome? You can do all your personal stuff in one Chrome profile, and all your G Suite stuff in another. You can even use both profiles simultaneously (though in separate windows).

https://support.google.com/chrome/answer/2364824?hl=en

You may also want to consider only using your G Suite account for G Suite features. Certain features designed for personal Google accounts don't work properly for G Suite accounts (like Youtube/Google Play Music family plans).

https://support.google.com/youtube/answer/7507349