Adam,,, over-kill or over build is one great mistake made on a lot of trailer builds,,, I overbuilt on my first teardrop, (4'6 x 9'6) and the dang thing was a bear to handle,,,, out on the interstate it pulled great but at camp or in tight places it was difficult,,, 1400 lbs, 130 lb tongue weight,, my second is light weight,,, (750) lbs loaded and I can lift the tongue and walk it into a tight spot if needed,, What kind of tow vehicle are ya gonna use?? tongue weight may also be a concern with a real heavy trailer,,,
Another real bad side of overbuild is cost,,, 3/4 ply with 1/4 inside is just dang expensive compared to a 1/4 ourter and 1/8 inside and unless you are a die hard winter camper 1-1/2" insulated walls are overkill,,, I have 1/2" walls on mine and with a tiny heater I am comfortable in sub freezing temps,,, if ya want insulated walls go with 3/4" space ,,, when everything is glued and screwed together you end up with a super strong unit, not necessary to have a super strong, super heavy one,,
with all dat said,,, I am gonna put in this disclaimer,,, I damn sure aint a professional but there are many on this forum and their experience and information in building is very valuable,,, so all this above babling is from an ameture wood butcher and is just my humble opinion,,,
Road King rider huh,,, head south,,, we got some fine mountain riding here,,,, if ya like twisties and dragging ya pegs
http://www.tailofthedragon.com/
ride safe and happy building
chipper