Andy. In the first place, what were you doing ironing !! or were you doing a bit of "extreme ironing"?
It really depends how bad this is. As the plastic you have is extremely glueable and fillable, I would say bash on and try some repairs. Stanchions. You may be able to get some brass ones, not a full set, but sufficient to replace those that were broken, even if it means having some slightly different. This could be disguised by having the two sets one at one end and one at the other, This would balance out and not look so odd. Or just simply dont put so many on.
Purchasing a new kit will be a bit expensive.
It is not generally known but I BELIEVE Airfix used to sell spare bits, or at least frames of parts, if requested. Could try Italeria?? nothing ventured etc,
Ashley