We have a big girl, a bit over 30 lbs we plan on possibly shipping out soon. I was considering double boxing for extra strength and insulation...

I don't think it'd be a problem, but I was wondering if there were any concerns for double boxing that I should be aware of?

Thanks!
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1.1 96, 04 Het Albino - "Suzie" & "Lumpy"
1.0 06 TH-Moonglow - "Gargamel"
1.2 01 BRBs- "Gobball", "Larva" & "Tofu"
2.7 08 BRBs