looks good, I'd recommend swapping one shoota squad for cc boyz and drop the eavy armor on the nobs to give the mechs cybork bodies. Rokkits are ok, but I'd also recommend swapping to all grotzookas to get 2 more lootas.
I'm just worried that if I drop the rokkits, I'll have no ranged hits stronger thanqStr 7, and I usually go up at least 2-3 land raiders in these tournaments. I may drop one of the shoota squads for a CC squad and split the remaining shoota squad into two 10 man squads to sit on objectives. Thanks for the advice.