Have you looked at something like the Tech21 Sansamp Bass Driver DI or VT Bass DI pedals? They combine Preamp and Cab Sim, and have XLR DI Outputs.
There are plenty of other DI pedals available that have cab sims on board, but the Tech21 gear is very well respected and very versatile.
If you looked at MultiFX setups, you would have a host of further options available, by having both Preamp & DI on board, as well as having effects as well. This would negate having to have further pedals. There's the Zoom B1.Four at the lower end, right up to the likes of the Line6 Helix / Kemper / AxeFX / Headrush which will cost quite a bit.
Going "amp-less" is a bit of a fallacy, as you will still need some sort of means to make yourself heard. If you're looking at playing at home/recording/etc. then that's fine, a decent set of headphones will do the trick. If you're looking at playing pubs & clubs, then a decent PA with decent monitoring is probably not going to happen, and you'll still need some sort of amp to make yourself heard (to the band and the audience).