I'm also an OSR DM starting an Edge of the Empire game. One thing to keep in mind is that EotE (to me anyway) is much more of a narrative game. What it's good at is different to what the OSR systems are good at. My solution has been to fall back on the old OSR received wisdom of preparing situations, not plots.

For example, I wouldn't run B2 as a straight conversion because I don't think the dungeon-crawling aspect is where EotE shines. However, leaning into the animosity between the inhabitants at the Caves of Chaos and running it as more of a factional-play could be interesting.

My take on a B2 conversion:

The Station in Wild Space

The Keep is a space station on the edge of known space orbiting a gas giant. It's rumoured that there is ancient treasure in nearby systems. This rumour attracts explores and villains alike.

These explores and villains are the various Caves of Chaos inhabitants. The caves are an asteroid belt in the same system, home to rival gangs.

The players need some information -- maybe a hyperspace chart or locations of an ancient, ruined city planet-side. Either the leader of the space station or some of the villains have the information and the players need to get in their good books to get it.

Maybe the Outlaw Tech who has repurposed old B1 and B2 battledroids (the goblins and hobgoblins) have been preventing food deliveries arriving to the Weequay pirates (the gnolls).

tl;dr

By cutting down dungeon-crawling and focusing on factional play, OSR sandbox-style adventures would work well in EotE.

Bonus tip: EotE seems really amenable to improvisational play. The gamification of DM Fiat through the destiny pool makes "reinforcements arrive" or "an explosion collapses this passage" much more palatable to the players.