So im working on a new force based cantrip. What's everyones thoughts? Also based on the idea what save type would best fit and what range would work best?

details so far:

Name: Forcewave

School: Evo

Dmg: 1d8, scales as normal cantrips

Effect: damages on a failed save and pushed target 5 feet away from caster. 

Save type: STR, CON, or DEX?

Range: 30 or 60 feet

Strength should be the save, and given the name I would make it a 5-foot radius effect like, thunderwave, radiant word, and blade burst, dealing 1d6 damage with that added effect (the perfect spell to say "Get away from me")

It's not meant to target multiple creatures, it's meant to target one, hence the range and d8 damage die. 

I’ve got a couple similar published: (https://www.dndbeyond.com/homebrew/spells?filter-class=0&filter-search=&filter-sub-class=&filter-concentration=&filter-ritual=&filter-author=IamSposta&filter-author-previous=IamSposta&filter-author-symbol=102118565&filter-rating=-8) They’re down in the “Telekinetic” spells, and one called “forceful declaration.” (I went for lower damage but a 10-foot push.)

Forced movement save is typically Strength.

Personally, 60 ft seems fine. 

I originally wanted it to be a 15 foot cone and a 1d6 damage but Ive read that a cantrip shouldnt have that kind of area of effect.