I don't think Symbiobugs and Infiltration can be combined into anything cheaper than 35 points. But my level of points-evaluation-fu is not as good as @Magonus.
As far as I can tell, Symbiobugs cost like 2 points. The big spenders on the Taqeul are BS13, Regeneration, and Chain of/Advanced Command. Infiltration isn't cheap, but it's affordable at four points. You could easily make a cost-effective Moran-esque Symbiobugs skirmisher like this: Gao-Moraan Regular, Not Impetuous, SK Active Symbiont MOV4-4 CC13 BS11 PH13 WIP13 ARM1 BTS3 W1 S2 Equipment: Symbiont Armor Special Skills: CH: Mimetism • Intfiltration • Multiterrain Inactive Symbiont MOV4-4 CC13 BS11 PH11 WIP13 ARM0 BTS0 W1 S2 Equipment: - Special Skills: Intfiltration • Multiterrain GAO-MORAAN Combi Rifle, Symbiobugs (2) / Pistol, Knife. (0.5 / 25) GAO-MORAAN Viral Combi Rifle, Symbiobugs (2) / Pistol, Knife. (0.5 / 31) GAO-MORAAN (Forward Observer) Combi Rifle, Symbiobugs (2) / Pistol, Knife. (0.5 / 26)
I think they would more likely have an infiltrator with symbio bugs but not symbio armor. I would think boarding shotgun instead of viral combi, based on the loadouts we currently have, and loadouts for infiltrators from other factions. Prolly add some sort of grenades to a profile. I kinda doubt FO, since the bugs make people targetted anyways.