Keep in mind you can also make specialized foci.
A foci that can only be used for a specific spell gets a +1 bonus. You might have a house rule that a foci that is only usable once a session is also more efficient.
Enchanted items are really only effective if you have a high Lore. If you have only a 3 lore, your enchanted items won't be that great.
You could have a warrior wizard:
5 conviction, 5 discipline
4 weapon, 4 athletics
3 lore, 3 endurance
They have their warden sword, a refinement in Evocation for a total of +1 power +2 control in their main element, and put 2 item slots into +2 power +2 control, only for 1 rote spell.
That is a nice healthy 7 power spell they can cast on the move.