Tires - Making sure

[funpilot]

I should be getting my new trailer in about two weeks so am looking to immediately replace the Marathons with Maxxis and keep the Marathons as spares. Since I am getting perhaps the heaviest TM made today (3124KD) I have been persuaded by discussions here and elsewhere to get "E" rated. Here is a link to the tire I think I should get: Please comment.

http://www.discounttiredirect.com/di...25&ar=75&rd=15

I also want to get wheels for these tires. Anyone know the current bolt pattern for this trailer? Any suggestions on wheels?

I do remember to get the better valve stems.