An Ultrlight Rig is a rig that costs as close to zero to install and run as possible. Kit's Ability and a Yog.0.Saurus combine to only cost me an estimate 1.6 credits per run. (Which is about 24 credits over the course of a adv. game vs. 80 or 90 credits with some other rigs)
Use Parasite Recursion to thin out the corp's Ice. (Kit's ability already forces the corp to double up on the Ice for effectiveness, so 2+ layers of Ice on the centrals is pretty common - the parasite can make quick work of that.
Escher is a great late game play after the corp has thrown down 2 ice on archives (to try and stop your data sucker runs). Scavenge to turn your Yog.0 into a Yog.0.Saurus if things get really sticky.
I know you may not like my choice of Inti, but for the 2 or 3 times I am going to use it each game, it's just not worth the influence cost to include a more efficient breaker.
Same with Pipeline. Femme Fatal and Pipeline are essentially the same breaker, but Femme has the bypass ability (at +6 cost). I'd rather have the consistency of getting an early datasucker in hand, and deal with the sentries with a Parasite.
Both Inti & Parasite cost 2 credits to boost strength, so they pair well with the Datasucker.