Another DUMD Tire Question

Have a 95 ZJ Ltd 4.0, Curentlly have 235-75-15 Long Trails , thank GOD they a ready for replace. Have stock rims 7.0 wide. Question: can I put 255-70-15 on them, read they take a 6.5 - 8.0 rim, would like to fill the wheel well better and have the wider traction ( adding Addco rear sway ) . The road /Highway 20mi to work is curvy and like to handle it better. 90% on road 10% off, mainly Forest service roads. ( Moma's rule not mine ) Also any suggestion as to brand, I've read lots of reviews. Any comments on Firestone Destination ( $70. ) P.S not alot of $$ but good in rain, ice, ect. Sorry for the long Post, but know some repliers get cranky without the info. Peace