Just curious, why don't you finish leveling your republic team? My first group to 50 was a vanguard, gunslinger, commando, and sage. I actually wish that I had leveled 2 commandos instead of the slinger.

I ran some parsers on my slinger and commando fights and discovered that my columi geared assault commando was doing higher DPS than my Rakata geared slinger.

I think you would find that your republic group could clear a couple flashpoints (red reaper) to level up to 47 then do a couple days of Belsavis dailies and you'd be at 50 in no time. Plus you would get a ton of cash from doing the dailies that you could give to your imp team.