If i'm breeding for a Beldum, in general, do I want max Speed? It doesn't look like one of those "MUST have a 31 Speed IV or it's useless, no exceptions" Pokes like Choice Band/Specs Salamence, but it seems to be able to use some quick. If anything, it definitely needs enough to outspeed Blissey and slow Tyranitar.
Also, I plan to breed for a Magby that I can eventually evolve into a good Magmortar. If my patience runs dry trying to get one with that precious 70 HP Ice, what would be a decent alternative for it? Overheat, Thunderbolt, Focus Blast and what else? Another Fire move perhaps? Psychic? =\