Strings made for slapping may have to less tension. The medium tension Innovations (Braided, Honeys) may work. The Braided can be bowed well, the Honeys a bit less good but better than Spiros. I haven't tested it but from what I read and heard from others the Garbo wouldn't bow as well as the two Innovation metal wound string sets.
I would say give the Innovation Braided (140B) a try. I like them for bowing and pizz. The tension is not too low, but expect a bit less power than from Spiros. The Honeys (140H) have a bit more tension and are a bit louder, but have a darker sound with a lot of attack pizzed. The attack may help to be heard better, but the bowing is less good.
Depends on what you need.
Strings with a synthetic outer surface are not very good to bow, sometimes impossible to bow at all. So I woundn't care about these strings if you want to bow more than a few long notes.
A bit thicker gut strings (medium to heavy) on G and D with some Spiros (Weich?) on A and E might be another thing to try, but bowing is different on gut and Spiros.