If you can do steeping grains, you can do a small mash. I would just replace the 2-row with 4-5 pounds of LDE and do a small mash with the rest of the grain bill.
mash with 2 gallons of water at 160 to hit a temperature of 150, you can do it in any vessel that will hold 3 gallons, wrap it in a towel and let it sit for an hour.
After the hour is up strain it into your brewpot and heat the rest of your clean brewing water in another vessel to 170 and let the grainrest in there for another half hour or 45 minutes, again strain into your brewpot, add yur extract and away we go!
I never did steeping grains really, so i dont know anything about that. though steeping seems like a really simplified mash.