Skarmory, will probably work out better, It has Crazy Defenses, and It can be a excellent lead with traps, I've noticed traps aren't just good for Competitive battling, they saved my life in the elite for against Metagross, And archeops, although it has crazy attack, you can't use Head-Smash because of defeatist, and if you do survive a hit, Archeops is Very VERY frail, and it Will almost definitely be at less then half health, so go Skarmory with the moves of
- Spikes(get this at level 28)
- Stealth Rock(you can get this by breeding)Or Brave Bird which you also get by breeding!
- Night Slash(You get this at level 50) Or If you want to Heal go Roost(You can get it by A move tutor
- Steel Wing(You get this Level 34)