Thanks for the detailed responses. I think going battlegroup and getting out a half track might be the answer as it could suppress everything before it can do too much damage. Only issue is getting rolled over by a T70
Going aaht let’s you save money on mags letting you get 1-2 raks.
Plus aaht vs t70 isn’t as bad as you think. While yes the t70 will win in a straight up fight, it doesn’t win very fast and the AAht can put out “ok” damage to make the t70 reconsider going for the kill and possibly suffering one or two rak hits. Furthermore if it’s shooting at the HT it isn’t bleeding your infantry.
All in all when it comes out consolidate your forces and let your HT do some dps, while you rush volks and raks to save it.