The blue gourami will outgrow the 10g...so be looking for a bigger tank.
As far as tankmates, I have my opaline (close to a blue) gourami with glowlight and neon tetras, panda cories, and ottos. I added a Bolivian ram recently and the opaline kept chasing her, so I had to move her to my 55g. I wouldn't keep them with similar sized fish.