snikrot does get infiltrate... however his unit loses the ambush special rule if its joined by any other
ICs(your warboss) you could very well end up with your warboss somewhere useless and with mega armor your warboss will be a non factor in the game since he can't run due to
SnP.
rerollable 2+ from the lukky stick is great and all until you get hit by some
ap 1
ap 2 nonsense...
food for thought if you replace the warboss with:
Big Mek w/ Mega Armour[mega blasta& power klaw],
KFF 125 points
and drop 1 ammo runt,
you could also add 2 rokkits(or big shootas) to the kommandos so the turn they come in(with ambush it would be your choice of where) they can shoot something and be a threat instead of standing there.
also a big mek in a unit of mek gunz gives the unit a 5+ invulnerable, and as the mek has
SnP the unit now has it and can move and shoot as artillery.
and as stated above, an
IC without infiltrate cannot join a unit with it during deployment, so you cant attach a warboss to the snikrot unit to infiltrate anyways
Independent Characters and Infiltrate
An Independent Character without the Infiltrate special rule cannot join a unit of Infiltrators during deployment.