looking for wheels /tires

[Montana '70]

Hey guys, I'm hoping somebody on here is a dealer and can help me find a wheel/tire combo for my 70 chevelle. If there is any interest, pm me a email and ph #. I'm thinking 18 x 10 out back with 295/40/18 but the wheels I like only come in 9.5.(is that too small for a 295?) Up front 18 x 8 with 245/35/18 (maybe)