Newbie with Aveo in need of timing belt/head help

[DRG2003]

Got the head pulled! All 8 exhaust valves are bent with a little bit of the head dinged up around where they seat. Is this a big deal? Wondering if I should play it safe and send it out to be checked out/valves replaced or attempt to do it myself. Intake valves looked ok but didn't make a point yet of rotating them out to see if they're damaged. Pistons look ok too... just a slight grazing where the valves made contact. My mechanic said they should be fine as long as I make sure there aren't any burs that could cause hot spots.