When is a good time to start the DLC when in co-op?

My friend and I are honestly thinking of trying TVHM and 2.5 mode but we have no idea WHEN we should do the DLC for this game.

I personally played the DLC ALLL the way after 2.5.

Mainly because I wanted the most difficult challenge I could manage.

So wait until we get to 2.5?

It’s not like Borderlands 2, where it’s best to do them now (TVHM/UVHM) just to pick up some good weapons for OP levels?

Since there are no OP levels, and since you can’t reset, it’s nice to save some missions to complete at max level just, as @Giuvito said, for the challenge. You can get good gear by farming pretty much anything in BL1…

The one thing I would say, is don’t forget to do Miss Moxxi’s on every mode you can. FREE POINTS.

I can’t bring myself to do that. I have never managed to complete even the first arena (got through a couple of waves before bombing out.) Guess I’m just not that good of a player to hack it solo, and I rarely have the time to stick it out long enough to complete anyway.

Honestly. I can say the following.

If it weren’t for the fact that I can wait out 90% of enemies on Brick by running away and getting back my health instantly, I wouldn’t have either.