golem and gliscor heres why....
golem is a rock type in the elite four he'll be in trouble because of bertha
gliscor because you already have a strong ground type named gabite and i reccomend not evolving gabite till lvl49 because gabite can learn dragon rush at level 49
as for gabite, id say evolve it at level 48 because that's the only time any of its evolutions will learn crunch.