change up your praetor's loadout. Give him the iron halo (2+4++ is better

) and try out the archaeotech pistol, but I've found that it's not that useful.
Don't fall into the trap of thinking "I need all the big stuff" honestly, your list would benefit the most from adding a few 15/20-man tactical squads as opposed to trying to spam huge stuff. Look through 1d4chan's page on legion tactics. It would also help here more if you listed what was in each squad.
If your worried about low model count in the future, drop the thunderhawk: 30k is generally boys>toys, though it's not like there's any bad options to take, just build what you think is cool/fluffy. 30k wolves were all about that massed charge to go stab stuff.