Things always get better and we all have rough patches. Hope your health issues sort out.
As for helmets I agree with above posters, Troopermaster (the seller) knows about as much about these suits as humanly possible and his armor is super accurate. RS Propmasters is essentially a recast off a screen-used Stunt, can't get much more accurate than that.
You can also check out The Replica Section or The RPF which are more focused on prop replication/forgery if you are wanting to get something that looks like it came right out of the film, there is tons of reference on how to replicate everything down to the paint chips.