Is This Playable on a Cello?

Hello. I'm writing a minimalist-inspired piece in which each of the instruments of the string quartet repeats a figure while passing through the harmonic progression. I'm pretty confident in the "playability" of the upper string parts. However, I'm wondering whether 1) it would be possible for an intermediate-level cellist to play this figure in a single stroke, and 2) whether it would be tiring for a cellist to repeat this figure over and over, bar by bar (among different chords) over the course of a 2- to 3-minute piece with minimal / no breaks. Example is in a PNG file, attached. Thanks!

It's definitely playable.

Because I'm not a cellist, I can't tell you how tiring it will be over long periods. It will be more difficult than the upper strings because the hand stretch is bigger.

How fast?

@Monarcheon ah should've mentioned tempo. Allegro, about 130 bpm

@aMusicComposer -- Thanks!

Yeah, then absolutely fine, though I'm not sure if they'll like you all that much, Jenkins 2.0.

Haha, I put in a contrasting B section with dotted-half note pizzicatos in an attempt to make them hate me less 

Yes, they'd use the G and D strings which, open, wouldn't ring as they'd be stopped for the B and higher G. All "first position".