In all reality unless your doing some harder 4wding, stick with the 265's. Also maybe easier to get in remote areas if thats a concern.
Why not stick with those for a while, and get some value out of them. Your not heading to the middle of nowhere anytime soon... So round town they should be ok. I believe your next big trip is next yr, hold off until your leaving, then go on fresh new rubber for the trip.
If your set on getting Procomp wait till they have a buy 3 get 1 free sale, which I've never understood as 90% of people need 5 tyres. Last time I priced procomps they were poison expensive.
BFG only supply certain dealers, same as many tyre companies. So, if you want them from your favourite Dealer, they may have to buy them from another dealer, thus the price isnt that flash...
Take a good look at the MTR's.. This is my 4th or 5th set, over 2 cars...Although this is my first in the new pattern and only had them a few, so wont comment on them, but
so far. And the place in Richmond can get them
What size tyres are on your trailer?? Just something to think about.
Also 285's are oversized and illegal but you knew that and would defect yourself instantly