How should I level this character?

[NecroDancer]

I'm making a level one character for a modern magic campaign, the character is a half-Orc rogue who's stats are 10/14/14/14/12/12. She has expertise in hacking and sleight of hand. I plan to have her take the mastermind archetype. My question is should I multiclass and if so into what class? Also I want to name her after a band or a song from the 60-80 any suggestions?

[Dizlag]

First name that popped into my head was Peggy Sue ... a song by Buddy Holly.

[Axorfett12]

I don't think you should multiclass, as rogue functions just fine by itself. If you do want to multiclass, I'd go 2 levels of Spell-less ranger for some maneuvers and a fighting style.

I'd name her Sharona.

[JellyPooga]

An extended dip into Diviner Wizard to pick up some divinations for seeking out information dumps seems appropriate to me and doesn't impinge on her Roguishness too much. 6 levels of Wizard after picking up Reliable Talent at 11th and/or your 4th ASI at 12th should do the trick, I reckon.

Also, you should call her Echo and her hacking alias: Bunnyman.