Skip the dozer blade (unless you just want to use it cause its cool, thats fine then), and downgrade the bodyguard to a normal bullgryn. The bodyguard doesnt really gain a lot outside of interesting loadouts and the bodyguard rules, so if youre not using him to guard your warlord and maybe add a bit of counterattack potential, I dont think hes really a good idea here. Trackguards and flamers are a good idea though, as it gives you a chimera that basically doesnt care at all how much damage it has taken - itll do its job til it goes kaputt.
An alternative is using a taurox with 3 bullgryn and a priest, which can also be fun. Or go whole hog and get a stormlord, pack it with a full squad of bullgryns, a priest and Yarrick.
(plus any support elements that still fit,
ofc)