Hard seats on exhaust only

[qmdv]

Pulled a 59 AB apart that was put together by a friend of my dads around 1975 with a 4" crank and 3 5/16 pistons. Has adjustable lifters. The intakes are soft and exhaust are hard. The valve seats are ground at 45 deg but the intake valves are at 30 degrees.

Everything looks great except the intake valves. What think you guys about leaving the soft seats in the intake and just resembling with new intake valves.