I'm also slowly putting a Lightning together & will be using a Titan.

From what I understand, they key is to keep it light & install the equipment as far forward as possible to minimize the added weight later for cg. Seems like adding a heavy bluebox cockpit and/or smoke system is what will get you into trouble using a Titan.

FYI, if you check out BV's Ultra Bandit with Titan power they say it weighs 33 lbs dry. Comp-Arf says the Lightning should be 28.67 to 31.97 lbs dry.

As far as the retracts, out of the box quality is great. I like the solid up/down lock mechanism. For reliable operation, I think air pressure/volume is important due to the large pistons. The single tank supplied seems marginal. I plan on using dual tanks for retracts & seperate tank for brakes like my kingcat.