Shouldn't affect Urth's Gift as the monsters there are close enough to the level of the gear you say you're SBing. As for FATEs...you'll just have to seek out FATEs that match the level of the gear you're Bonding. Best thing to do would be to deck out your right side in i70 jewellery and spam Coil 1 (Turn 3 anyone?) or even Syrcus Tower or the higher 4-man dungeons. Now if the made LoA gear Convertible you could SB in FL without nerfing yourself lol